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        <link:definition>4019 - Disclosure - Business combinations - MAT PL (Detail)</link:definition>
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        <link:definition>4033 - Disclosure - Investment in associates and joint ventures detail movement (Detail)</link:definition>
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        <link:definition>4037 - Disclosure - Other non-current assets (Detail)</link:definition>
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        <link:definition>4034 - Disclosure - Inventory and Contracts in Progress (Detail)</link:definition>
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        <link:usedOn>link:calculationLink</link:usedOn>
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        <link:definition>4038 - Disclosure - Other current assets (Detail)</link:definition>
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        <link:usedOn>link:calculationLink</link:usedOn>
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        <link:definition>4040 - Disclosure - Trade receivables (Detail)</link:definition>
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        <link:usedOn>link:calculationLink</link:usedOn>
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        <link:definition>4042 - Disclosure - Movement table bad debt reserve (Detail)</link:definition>
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        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
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        <link:definition>4043 - Disclosure - Cash and cash equivalents (Detail)</link:definition>
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        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
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        <link:definition>4047 - Disclosure - Reserve table (Detail)</link:definition>
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        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
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        <link:definition>4058 - Disclosure - Other non-current liabilities (Detail)</link:definition>
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        <link:usedOn>link:calculationLink</link:usedOn>
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        <link:definition>4063 - Disclosure - Deferred income (Detail)</link:definition>
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        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
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      <link:roleType roleURI="http://www.materialise.com/20181231/role/OtherCurrentLiabilities" id="OtherCurrentLiabilities">
        <link:definition>4061 - Disclosure - Other current liabilities (Detail)</link:definition>
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        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
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        <link:definition>4067 - Disclosure - Segment information (Detail)</link:definition>
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        <link:usedOn>link:calculationLink</link:usedOn>
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        <link:definition>4069 - Disclosure - Segment reconciliation (Detail)</link:definition>
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        <link:definition>4027 - Disclosure - Remaining amortization period on intangibles resulting from business combinations (Detail)</link:definition>
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        <link:definition>4030 - Disclosure - Property, Plant and equipment Narrative (Detail)</link:definition>
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        <link:definition>4070 - Disclosure - Revenue and Non-Current Assets by geographical areas (Detail)</link:definition>
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        <link:usedOn>link:calculationLink</link:usedOn>
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        <link:definition>4075 - Disclosure - Research and development expenses (Detail)</link:definition>
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        <link:definition>4076 - Disclosure - Sales and marketing expenses (Detail)</link:definition>
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        <link:definition>4077 - Disclosure - General and administrative expenses (Detail)</link:definition>
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        <link:definition>4079 - Disclosure - Payroll expenses (Detail)</link:definition>
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        <link:definition>4080 - Disclosure - Financial expense (Detail)</link:definition>
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        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
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        <link:definition>4081 - Disclosure - Financial income (Detail)</link:definition>
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        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
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      <link:roleType roleURI="http://www.materialise.com/20181231/role/CurrentIncomeTaxes" id="CurrentIncomeTaxes">
        <link:definition>4082 - Disclosure - Current income taxes (Detail)</link:definition>
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        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
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      <link:roleType roleURI="http://www.materialise.com/20181231/role/DeferredTax" id="DeferredTax">
        <link:definition>4084 - Disclosure - Deferred tax (Detail)</link:definition>
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        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
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      </link:roleType>
      <link:roleType roleURI="http://www.materialise.com/20181231/role/RelationshipTaxExpenseAndAccountingProfit" id="RelationshipTaxExpenseAndAccountingProfit">
        <link:definition>4085 - Disclosure - Relationship tax Expense and accounting profit (Detail)</link:definition>
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        <link:usedOn>link:calculationLink</link:usedOn>
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      <link:roleType roleURI="http://www.materialise.com/20181231/role/NetProfitAttributableToOrdinaryEquityHoldersOfTheParentForBasicEarnings" id="NetProfitAttributableToOrdinaryEquityHoldersOfTheParentForBasicEarnings">
        <link:definition>4088 - Disclosure - Net profit attributable to ordinary equity holders of the parent for basic earnings (Detail)</link:definition>
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        <link:usedOn>link:calculationLink</link:usedOn>
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        <link:definition>4087 - Disclosure - Weighted average number of ordinary shares for basic earnings per share (Detail)</link:definition>
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        <link:usedOn>link:labelLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.materialise.com/20181231/role/CapitalLeaseCommitments" id="CapitalLeaseCommitments">
        <link:definition>4091 - Disclosure - Capital lease commitments (Detail)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:labelLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.materialise.com/20181231/role/LiquidityRisk" id="LiquidityRisk">
        <link:definition>4097 - Disclosure - Liquidity risk (Detail)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:labelLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.materialise.com/20181231/role/CreditRisk" id="CreditRisk">
        <link:definition>4099 - Disclosure - Credit risk (Detail)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:labelLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.materialise.com/20181231/role/SensitivityAnalysis" id="SensitivityAnalysis">
        <link:definition>4096 - Disclosure - Foreign Currency Sensitivity (Detail)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:labelLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.materialise.com/20181231/role/OperationalLeaseCommitmentsParenthetical" id="OperationalLeaseCommitmentsParenthetical">
        <link:definition>4090 - Disclosure - Operational lease commitments Narrative (Detail)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:labelLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.materialise.com/20181231/role/MortgagesAndPledges" id="MortgagesAndPledges">
        <link:definition>4092 - Disclosure - Mortgages and pledges (Detail)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:labelLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.materialise.com/20181231/role/OtherCommitments" id="OtherCommitments">
        <link:definition>4093 - Disclosure - Other commitments (Detail)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:labelLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.materialise.com/20181231/role/RelatedPartyTransactions" id="RelatedPartyTransactions">
        <link:definition>4100 - Disclosure - Related party transactions (Detail)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:labelLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.materialise.com/20181231/role/Transactions" id="Transactions">
        <link:definition>4102 - Disclosure - Transactions (Detail)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:labelLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.materialise.com/20181231/role/TransactionsParenthetical" id="TransactionsPatenthetical">
        <link:definition>4103 - Disclosure - Transactions Narrative (Detail)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:labelLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.materialise.com/20181231/role/BasisOfPreparationTextBlock" id="BasisOfPreparation">
        <link:definition>1002 - Disclosure - Basis of preparation</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:labelLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.materialise.com/20181231/role/CorporateInformationTextBlock" id="CorporateInformation">
        <link:definition>1001 - Disclosure - Corporate information</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:labelLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.materialise.com/20181231/role/IntangibleAssetsTextBlock" id="SignificantAccountingJudgementsEstimatesAndAssumptionsTable">
        <link:definition>1006 - Disclosure - Intangible assets</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:labelLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.materialise.com/20181231/role/GoodwillTextBlock" id="GoodwillTextBlock">
        <link:definition>1005 - Disclosure - Goodwill</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:labelLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.materialise.com/20181231/role/Inventory" id="Inventory">
        <link:definition>1009 - Disclosure - Inventory and contracts in progress</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:labelLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.materialise.com/20181231/role/Risks" id="Risks">
        <link:definition>1025 - Disclosure - Risks</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:labelLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.materialise.com/20181231/role/OverviewOfConsolidatedEntities" id="OverviewOfConsolidatedEntities">
        <link:definition>1028 - Disclosure - Overview of consolidated entities</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:labelLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.materialise.com/20181231/role/BasisOfPreparationTables" id="BasisOfPreparationTables">
        <link:definition>3002 - Disclosure - Basis of preparation (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:labelLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.materialise.com/20181231/role/BusinessCombinationsTextBlock" id="BusinessCombinationsTextBlock">
        <link:definition>1004 - Disclosure - Business combinations</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:labelLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.materialise.com/20181231/role/GoodwillTables" id="GoodwillTables">
        <link:definition>3015 - Disclosure - Goodwill (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:labelLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.materialise.com/20181231/role/SummaryOfSignificantAccountingPolicies" id="SummaryOfSignificantAccountingPolicies">
        <link:definition>1003 - Disclosure - Summary of significant accounting policies</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:labelLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.materialise.com/20181231/role/PropertyPlantAndEquipmentTextBlock" id="PropertyPlantAndEquipmentTextBlock">
        <link:definition>1007 - Disclosure - Property, plant &amp; equipment</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:labelLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.materialise.com/20181231/role/InvestmentsInJointVentures" id="InvestmentsInJointVentures">
        <link:definition>1008 - Disclosure - Investments in joint ventures</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:labelLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.materialise.com/20181231/role/TradeReceivables" id="TradeReceivables">
        <link:definition>1011 - Disclosure - Trade receivables</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:labelLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.materialise.com/20181231/role/CashAndCashEquivalentsAndHeldToMaturityInvestmentsTextBlock" id="CashAndCashEquivalentsAndHeldToMaturityInvestmentsTextBlock">
        <link:definition>1012 - Disclosure - Cash and cash equivalents</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:labelLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.materialise.com/20181231/role/Equity" id="Equity">
        <link:definition>1013 - Disclosure - Equity</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:labelLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.materialise.com/20181231/role/SharebasedPaymentPlans" id="SharebasedPaymentPlans">
        <link:definition>1014 - Disclosure - Share-based payment plans</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:labelLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.materialise.com/20181231/role/LoansAndBorrowings" id="LoansAndBorrowings">
        <link:definition>1015 - Disclosure - Loans and borrowings</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:labelLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.materialise.com/20181231/role/OtherNoncurrentLiabilities" id="OtherNoncurrentLiabilities">
        <link:definition>1016 - Disclosure - Other non-current liabilities</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:labelLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.materialise.com/20181231/role/DeferredIncomeTextBlock" id="DeferredIncomeTextBlock">
        <link:definition>1018 - Disclosure - Deferred income</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:labelLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.materialise.com/20181231/role/OtherCurrentLiabilitiesTextBlock" id="OtherCurrentLiabilitiesTextBlock">
        <link:definition>1019 - Disclosure - Other current liabilities</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:labelLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.materialise.com/20181231/role/FairValue" id="FairValue">
        <link:definition>1020 - Disclosure - Fair value</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:labelLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.materialise.com/20181231/role/SegmentInformationTextBlock" id="SegmentInformationTextBlock">
        <link:definition>1021 - Disclosure - Segment information</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:labelLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.materialise.com/20181231/role/IncomeAndExpenses" id="IncomeAndExpenses">
        <link:definition>1022 - Disclosure - Income and expenses</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:labelLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.materialise.com/20181231/role/EarningsPerShare" id="EarningsPerShare">
        <link:definition>1023 - Disclosure - Earnings per share</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:labelLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.materialise.com/20181231/role/CommitmentsAndContingentLiabilities" id="CommitmentsAndContingentLiabilities">
        <link:definition>1024 - Disclosure - Commitments and contingent liabilities</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:labelLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.materialise.com/20181231/role/RelatedPartyTransactionsTextBlock" id="RelatedPartyTransactionsTextBlock">
        <link:definition>1026 - Disclosure - Related party transactions</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:labelLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.materialise.com/20181231/role/EventsSubsequentToTheStatementOfFinancialPositionDateTextBlock" id="EventsSubsequentToTheStatementOfFinancialPositionDateTextBlock">
        <link:definition>1027 - Disclosure - Events subsequent to the statement of financial position date</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:labelLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.materialise.com/20181231/role/IntangibleAssetsTables" id="IntangibleAssetsTables">
        <link:definition>3016 - Disclosure - Intangible assets (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:labelLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.materialise.com/20181231/role/PropertyPlantAndEquipmentTables" id="PropertyPlantAndEquipmentTables">
        <link:definition>3017 - Disclosure - Property, plant and equipment (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:labelLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.materialise.com/20181231/role/InvestmentsInJointVenturesTables" id="InvestmentsInJointVenturesTables">
        <link:definition>3018 - Disclosure - Investments in joint ventures (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:labelLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.materialise.com/20181231/role/InventoriesAndOtherAssetsTables" id="InventoriesAndOtherAssetsTables">
        <link:definition>3019 - Disclosure - Inventories and contracts in progress and other assets (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:labelLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.materialise.com/20181231/role/TradeReceivablesTables" id="TradeReceivablesTables">
        <link:definition>3020 - Disclosure - Trade receivables (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:labelLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.materialise.com/20181231/role/CashAndCashEquivalentsAndHeldToMaturityInvestmentsTables" id="CashAndCashEquivalentsAndHeldToMaturityInvestmentsTables">
        <link:definition>3025 - Disclosure - Cash and cash equivalents (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:labelLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.materialise.com/20181231/role/EquityTables" id="EquityTables">
        <link:definition>3026 - Disclosure - Equity (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:labelLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.materialise.com/20181231/role/ShareBasedPaymentPlansTables" id="ShareBasedPaymentPlansTables">
        <link:definition>3027 - Disclosure - Share based payment plans (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:labelLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.materialise.com/20181231/role/LoansAndBorrowingsTables" id="LoansAndBorrowingsTables">
        <link:definition>3028 - Disclosure - Loans and borrowings (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:labelLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.materialise.com/20181231/role/OtherNoncurrentLiabilitiesTables" id="OtherNoncurrentLiabilitiesTables">
        <link:definition>3030 - Disclosure - Other non-current liabilities (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:labelLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.materialise.com/20181231/role/DeferredIncomeTables" id="DeferredIncomeTables">
        <link:definition>3032 - Disclosure - Deferred income (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:labelLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.materialise.com/20181231/role/OtherCurrentLiabilitiesTables" id="OtherCurrentLiabilitiesTables">
        <link:definition>3034 - Disclosure - Other current liabilities (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:labelLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.materialise.com/20181231/role/FairValueTables" id="FairValueTables">
        <link:definition>3035 - Disclosure - Fair value (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:labelLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.materialise.com/20181231/role/SegmentInformationTables" id="SegmentInformationTables">
        <link:definition>3037 - Disclosure - Segment information (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:labelLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.materialise.com/20181231/role/IncomeAndExpensesTables" id="IncomeAndExpensesTables">
        <link:definition>3038 - Disclosure - Income and expenses (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:labelLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.materialise.com/20181231/role/EarningsPerShareTables" id="EarningsPerShareTables">
        <link:definition>3041 - Disclosure - Earnings per share (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:labelLink</link:usedOn>
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      <link:roleType roleURI="http://www.materialise.com/20181231/role/CommitmentsAndContingentLiabilitiesTables" id="CommitmentsAndContingentLiabilitiesTables">
        <link:definition>3044 - Disclosure - Commitments and contingent liabilities (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:labelLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.materialise.com/20181231/role/RisksTables" id="RisksTables">
        <link:definition>3046 - Disclosure - Risks (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:labelLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.materialise.com/20181231/role/RelatedPartyTransactionsTables" id="RelatedPartyTransactionsTables">
        <link:definition>3048 - Disclosure - Related party transactions (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:labelLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.materialise.com/20181231/role/OverviewOfConsolidatedEntitiesTables" id="OverviewOfConsolidatedEntitiesTables">
        <link:definition>3050 - Disclosure - Overview of consolidated entities (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:labelLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.materialise.com/20181231/role/EquityDetail" id="EquityDetail">
        <link:definition>4045 - Disclosure - Equity (Detail)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:labelLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.materialise.com/20181231/role/SharebasedPaymentPlanDetail" id="SharebasedPaymentPlanDetail">
        <link:definition>4049 - Disclosure - Share-based payment plan (Detail)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:labelLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.materialise.com/20181231/role/BusinessCombinationsAcTechDetails" id="BusinessCombinationsAcTechDetails">
        <link:definition>4013 - Disclosure - Business combinations - ACTech (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:labelLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.materialise.com/20181231/role/IfrsTablesDetail" id="IfrsTablesDetail">
        <link:definition>4003 - Disclosure - IFRS 15 tables (Detail)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:labelLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.materialise.com/20181231/role/IfrsTablesTables" id="Ifrs15Tables">
        <link:definition>3003 - Disclosure - IFRS 15 tables (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:labelLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.materialise.com/20181231/role/RelatedPartyTransactionsNarrativeDetail" id="RelatedPartyTransactionsNarrativeDetail">
        <link:definition>4101 - Disclosure - Related party transactions Narrative (Detail)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:labelLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.materialise.com/20181231/role/LiquidityRiskNarrativeDetails" id="LiquidityRiskNarrativeDetails">
        <link:definition>4098 - Disclosure - Liquidity risk Narrative (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:labelLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.materialise.com/20181231/role/InventoryAndContractsInProgressNarrativeDisclosure" id="InventoryAndContractsInProgressNarrativeDisclosure">
        <link:definition>4035 - Disclosure - Inventory and Contracts in Progress Narrative (Detail)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:labelLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.materialise.com/20181231/role/CashAndCashEquivalentsAndHeldToMaturityInvestmentsNarrativeDetails" id="CashAndCashEquivalentsAndHeldToMaturityInvestmentsNarrativeDetails">
        <link:definition>4044 - Disclosure - Cash and cash equivalents Narrative (Detail)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:labelLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.materialise.com/20181231/role/ReserveTableNarrativeDetail" id="ReserveTableNarrativeDetail">
        <link:definition>4048 - Disclosure - Reserve table and non-controlling interest narrative (Detail)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:labelLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.materialise.com/20181231/role/DetailsGrantsMaterialiseEquitySettled" id="DetailsGrantsMaterialiseEquitySettled">
        <link:definition>4050 - Disclosure - Details grants Materialise equity settled (Detail)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:labelLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.materialise.com/20181231/role/OtherNonCurrentLiabilitiesNarrativeDetail" id="OtherNonCurrentLiabilitiesNarrativeDetail">
        <link:definition>4059 - Disclosure - Other non-current liabilities Narrative (Detail)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:labelLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.materialise.com/20181231/role/PropertyPlantAndEquipmentNarrativeDetails" id="PropertyPlantAndEquipmentNarrativeDetails">
        <link:definition>4999 - Disclosure - Property, Plant and equipment Narrative (Detail) OLD</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:labelLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.materialise.com/20181231/role/OtherCurrentLiabilitiesNarrativeDetail" id="OtherCurrentLiabilitiesNarrativeDetail">
        <link:definition>4062 - Disclosure - Other current liabilities Narrative (Detail)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:labelLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.materialise.com/20181231/role/FairValueNarrativeDetails" id="FairValueNarrativeDetails">
        <link:definition>4066 - Disclosure - Fair value Narrative (Detail)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:labelLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.materialise.com/20181231/role/FairValueFinancialAssetsDetail" id="FairValueFinancialAssetsDetail">
        <link:definition>4064 - Disclosure - Fair value of financial assets (Detail)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:labelLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.materialise.com/20181231/role/FairValueFinancialLiabilitiesDetail" id="FairValueFinancialLiabilitiesDetail">
        <link:definition>4065 - Disclosure - Fair value of financial liabilities (Detail)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:labelLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.materialise.com/20181231/role/CurrentIncomeTaxesNarrativeDetail" id="CurrentIncomeTaxesNarrativeDetail">
        <link:definition>4083 - Disclosure - Current income taxes Narrative (Detail)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:labelLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.materialise.com/20181231/role/DetailsGrantsMaterialiseCashSettledDetail" id="DetailsGrantsMaterialiseCashSettledDetail">
        <link:definition>4054 - Disclosure - Details grants Materialise cash settled (Detail)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:labelLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.materialise.com/20181231/role/DetailsGrantsMaterialiseDetail" id="DetailsGrantsMaterialiseDetail">
        <link:definition>4051 - Disclosure - Details grants Materialise (Detail)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:labelLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.materialise.com/20181231/role/DetailsShareBasedPaymentArrangementsMaterialiseDetails" id="DetailsShareBasedPaymentArrangementsMaterialiseDetails">
        <link:definition>4052 - Disclosure - Details share-based payment arrangements Materialise (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:labelLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.materialise.com/20181231/role/DetailsExpenseAndWeightedAverageDetail" id="DetailsExpenseAndWeightedAverageDetail">
        <link:definition>4053 - Disclosure - Details expense and weighted average (Detail)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:labelLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.materialise.com/20181231/role/RapdriftDetailsGrantsDetail" id="RapdriftDetailsGrantsDetail">
        <link:definition>4054 - Disclosure - Rapidfit details grants (Detail)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:labelLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.materialise.com/20181231/role/NewTableOverviewDetail" id="NewTableOverviewDetail">
        <link:definition>4055 - Disclosure - Loans and borrowings (Detail)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:labelLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.materialise.com/20181231/role/MovementTableDetail" id="MovementTableDetail">
        <link:definition>4057 - Disclosure - Movement table (Detail)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:labelLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.materialise.com/20181231/role/TextValuesLoansAndBorrowingsDetail" id="TextValuesLoansAndBorrowingsDetail">
        <link:definition>4056 - Disclosure - Loans and borrowings Narrative (Detail)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:labelLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.materialise.com/20181231/role/AccountingPoliciesPolicies" id="AccountingPoliciesPolicies">
        <link:definition>2001 - Disclosure - Summary of significant accounting policies (Policies)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:labelLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.materialise.com/20181231/role/IfrsTablesNarrativeDetail" id="IfrsTablesNarrativeDetail">
        <link:definition>4004 - Disclosure - IFRS 15 tables Narrative (Detail)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:labelLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.materialise.com/20181231/role/BusinessCombinationsCenatNarrativeDetails" id="BusinessCombinationsCenatNarrativeDetails">
        <link:definition>4018 - Disclosure - Business combinations - Cenat Narrative (Detail)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:labelLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.materialise.com/20181231/role/BusinessCombinationsAldemaNarrativeDetails" id="BusinessCombinationsAldemaNarrativeDetails">
        <link:definition>4016 - Disclosure - Business combinations - Aldema Narrative (Detail)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:labelLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.materialise.com/20181231/role/BusinessCombinationsAcTechNarrativeDetails" id="BusinessCombinationsAcTechNarrativeDetails">
        <link:definition>4014 - Disclosure - Business combinations - ACTech Narrative (Detail)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:labelLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.materialise.com/20181231/role/GoodwillMovementTableNarrativeDetail" id="GoodwillMovementTableNarrativeDetail">
        <link:definition>4023 - Disclosure - Goodwill - Movement table Narrative (Detail)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:labelLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.materialise.com/20181231/role/ConsolidatedIncomeStatementsParenthetical" id="ConsolidatedStatementOfFinancialPositionParenthetical">
        <link:definition>0012 - Statement - Consolidated income statements (Parenthetical)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:labelLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.materialise.com/20181231/role/InvestmentInAssociatesAndJointVenturesNarrativeDetail" id="InvestmentInAssociatesAndJointVenturesNarrativeDetail">
        <link:definition>4032 - Disclosure - Investment in associates and joint ventures Nattarive (Detail)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:labelLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.materialise.com/20181231/role/OtherCurrentAssetsNarrativeDetail" id="OtherCurrentAssetsNarrativeDetail">
        <link:definition>4039 - Disclosure - Other current assets Narrative (Detail)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:labelLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.materialise.com/20181231/role/TableDetailNarrativeDetail" id="TableDetailNarrativeDetail">
        <link:definition>4041 - Disclosure - Trade receivables Narrative (Detail)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:labelLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.materialise.com/20181231/role/EquityNarrativeDetail" id="EquityNarrativeDetail">
        <link:definition>4046 - Disclosure - Equity Narrative (Detail)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:labelLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.materialise.com/20181231/role/TaxPayablesNarrativeDetails" id="TaxPayablesNarrativeDetails">
        <link:definition>4060 - Disclosure - Tax Payables Narrative (Detail)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:labelLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.materialise.com/20181231/role/DocumentAndEntityInformation" id="DocumentAndEntityInformation">
        <link:definition>0001 - Document - Document and entity information</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:labelLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.materialise.com/20181231/role/SummaryOfSignificantAccountingPoliciesNarrativeDetail" id="SummaryOfSignificantAccountingPoliciesNarrativeDetail">
        <link:definition>4009 - Disclosure - Summary of significant accounting policies Narrative (Detail)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:labelLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.materialise.com/20181231/role/TaxPayablesTables" id="TaxPayablesTables">
        <link:definition>3033 - Disclosure - Tax Payables (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:labelLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.materialise.com/20181231/role/IncomeTaxAndDeferredTaxTables" id="IncomeTaxAndDeferredTaxTables">
        <link:definition>3040 - Disclosure - Income tax and deferred tax (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:labelLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.materialise.com/20181231/role/NonControllingInterestNarrativeDetail" id="NonControllingInterestNarrativeDetail">
        <link:definition>4049 - Disclosure - Non-Controlling Interest Narrative (Detail)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:labelLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.materialise.com/20181231/role/OtherAssets" id="OtherAssets">
        <link:definition>1010 - Disclosure - Other assets</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:labelLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.materialise.com/20181231/role/TaxPayablesTextBlock" id="TaxPayablesTextBlock">
        <link:definition>1017 - Disclosure - Tax payables</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:labelLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.materialise.com/20181231/role/DisclosureOfRevenueFromContractsWithCustomers" id="DisclosureOfRevenueFromContractsWithCustomers">
        <link:definition>4071 - Disclosure - Disaggregated revenue information (Detail)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:labelLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.materialise.com/20181231/role/IFRS15BalanceSheetImpact" id="IFRS15BalanceSheetImpact">
        <link:definition>4005 - Disclosure - IFRS 15 Balance Sheet Impact (Detail)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
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  <xsd:element name="TotalCostsIncurredContractsInProgress" id="mtls_TotalCostsIncurredContractsInProgress" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration"/>
  <xsd:element name="TotalContractBalances" id="mtls_TotalContractBalances" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration"/>
  <xsd:element name="TotalProfitRecognizedContractsInProgress" id="mtls_TotalProfitRecognizedContractsInProgress" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration"/>
  <xsd:element name="AdvancesReceivedContractsInProgress" id="mtls_AdvancesReceivedContractsInProgress" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration"/>
  <xsd:element name="TotalContractsInProgressIncludedInWorkInProgress" id="mtls_TotalContractsInProgressIncludedInWorkInProgress" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="instant"/>
  <xsd:element name="EibFinanceContractMaxDrawFirstTranch" id="mtls_EibFinanceContractMaxDrawFirstTranch" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration"/>
  <xsd:element name="EibFinanceContract" id="mtls_EibFinanceContract" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration"/>
  <xsd:element name="EibFinanceContractDrawFirstTranche" id="mtls_EibFinanceContractDrawFirstTranche" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration"/>
  <xsd:element name="ConvertibleLoanCarryingAmount" id="mtls_ConvertibleLoanCarryingAmount" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant"/>
  <xsd:element name="AdditionsFinanceLeasesMotorVehiclesPropertyPlantAndEquipment" id="mtls_AdditionsFinanceLeasesMotorVehiclesPropertyPlantAndEquipment" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant"/>
  <xsd:element name="LandAndBuildingsPledgesAsSecurity" id="mtls_LandAndBuildingsPledgesAsSecurity" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="instant"/>
  <xsd:element name="CurrentAndOtherFixedAssetsPledgesAsSecurity" id="mtls_CurrentAndOtherFixedAssetsPledgesAsSecurity" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="instant"/>
  <xsd:element name="OtherFixedAssetsPledgesCarryingValue" id="mtls_OtherFixedAssetsPledgesCarryingValue" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="instant"/>
  <xsd:element name="IncreaseThroughLeasedMotorVehicles" id="mtls_IncreaseThroughLeasedMotorVehicles" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="instant"/>
  <xsd:element name="TotalAccumulatedDepreciationFinanceLeasesMachineryPropertyPlantAndEquipment" id="mtls_TotalAccumulatedDepreciationFinanceLeasesMachineryPropertyPlantAndEquipment" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant"/>
  <xsd:element name="NetLossOnDisposalOfPPE" id="mtls_NetLossOnDisposalOfPPE" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration"/>
  <xsd:element name="fNetLossOnDisposalOfPpeTextValue" id="mtls_fNetLossOnDisposalOfPpeTextValue" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration"/>
  <xsd:element name="RemainingAmortizationPeriodSoftwareRelatedIntangibleAssetsAcquisitionAcTech" id="mtls_RemainingAmortizationPeriodSoftwareRelatedIntangibleAssetsAcquisitionAcTech" type="xbrli:decimalItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant"/>
  <xsd:element name="RemainingAmortizationPeriodPatentAndLicensesRelatedIntangibleAssetsAcquisitionAcTech" id="mtls_RemainingAmortizationPeriodPatentAndLicensesRelatedIntangibleAssetsAcquisitionAcTech" type="xbrli:decimalItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant"/>
  <xsd:element name="RemainingAmortizationPeriodCustomerRelatedIntangibleAssetsAcquisitionAcTech" id="mtls_RemainingAmortizationPeriodCustomerRelatedIntangibleAssetsAcquisitionAcTech" type="xbrli:decimalItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant"/>
  <xsd:element name="RemainingAmortizationPeriodTechnologyRelatedIntangibleAssetsAcquisition" id="mtls_RemainingAmortizationPeriodTechnologyRelatedIntangibleAssetsAcquisition" type="xbrli:decimalItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant"/>
  <xsd:element name="ConvertibleLoanNumberOfBonds" id="mtls_ConvertibleLoanNumberOfBonds" type="xbrli:decimalItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant"/>
  <xsd:element name="NumberOfFounderShares" id="mtls_NumberOfFounderShares" type="xbrli:decimalItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant"/>
  <xsd:element name="EibFinanceDurationFrom" id="mtls_EibFinanceDurationFrom" type="xbrli:decimalItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant"/>
  <xsd:element name="EibFinanceDurationTo" id="mtls_EibFinanceDurationTo" type="xbrli:decimalItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant"/>
  <xsd:element name="EibFinanceReimbursementPeriod" id="mtls_EibFinanceReimbursementPeriod" type="xbrli:decimalItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant"/>
  <xsd:element name="CapitalizedSoftwareDevelopmentExpenditureNetOfFunding" id="mtls_CapitalizedSoftwareDevelopmentExpenditureNetOfFunding" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="instant"/>
  <xsd:element name="PerpetualGrowthrateDecreaseForSensitivityAnalysis" id="mtls_PerpetualGrowthrateDecreaseForSensitivityAnalysis" type="num:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant"/>
  <xsd:element name="fiveYearProjectionDecrease" id="mtls_fiveYearProjectionDecrease" type="num:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant"/>
  <xsd:element name="DilutionPercentFoundShares" id="mtls_DilutionPercentFoundShares" type="num:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant"/>
  <xsd:element name="VestingPercFirstPeriodShareOptions" id="mtls_VestingPercFirstPeriodShareOptions" type="num:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant"/>
  <xsd:element name="VestingPercSecondPeriodShareOptions" id="mtls_VestingPercSecondPeriodShareOptions" type="num:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant"/>
  <xsd:element name="VestingPercThirdPeriodShareOptions" id="mtls_VestingPercThirdPeriodShareOptions" type="num:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant"/>
  <xsd:element name="VestingPercFourthPeriodShareOptions" id="mtls_VestingPercFourthPeriodShareOptions" type="num:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant"/>
  <xsd:element name="ConvertibleLoanInterestRate" id="mtls_ConvertibleLoanInterestRate" type="num:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant"/>
  <xsd:element name="InstitutionalLoanInterestPercent" id="mtls_InstitutionalLoanInterestPercent" type="num:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant"/>
  <xsd:element name="FinanceLeaseAgreementsWeightedAverageInterestPercent" id="mtls_FinanceLeaseAgreementsWeightedAverageInterestPercent" type="num:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant"/>
  <xsd:element name="KeurEleventhousandtwohundredfiftyBankLoanAcTechRefinancedTwothousandeighteenInterestPercent" id="mtls_KeurEleventhousandtwohundredfiftyBankLoanAcTechRefinancedTwothousandeighteenInterestPercent" type="num:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant"/>
  <xsd:element name="fixedInterestRateCreditJune2018" id="mtls_fixedInterestRateCreditJune2018" type="num:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant"/>
  <xsd:element name="KeurEleventhousandtwohundredfiftyBankLoanAcTechInterestPercent" id="mtls_KeurEleventhousandtwohundredfiftyBankLoanAcTechInterestPercent" type="num:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant"/>
  <xsd:element name="EibFinanceInterestMargin" id="mtls_EibFinanceInterestMargin" type="num:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant"/>
  <xsd:element name="LegalReservesPercentIncrease" id="mtls_LegalReservesPercentIncrease" type="num:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant"/>
  <xsd:element name="LegalReserveMaxPercentOfCapital" id="mtls_LegalReserveMaxPercentOfCapital" type="num:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant"/>
  <xsd:element name="NonControllingInterestPercentInRapditFit" id="mtls_NonControllingInterestPercentInRapditFit" type="num:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant"/>
  <xsd:element name="UsdRateIncreaseBy" id="mtls_UsdRateIncreaseBy" type="num:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant"/>
  <xsd:element name="UsdRateDecreaseBy" id="mtls_UsdRateDecreaseBy" type="num:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant"/>
  <xsd:element name="TotalEscrowAmount" id="mtls_TotalEscrowAmount" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="instant"/>
  <xsd:element name="TotalAcquisitionCostsIncurred" id="mtls_TotalAcquisitionCostsIncurred" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="instant"/>
  <xsd:element name="FairValuePatentedTechnology" id="mtls_FairValuePatentedTechnology" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration"/>
  <xsd:element name="FairValueCustomerRelationships" id="mtls_FairValueCustomerRelationships" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration"/>
  <xsd:element name="FairValueOrderBacklog" id="mtls_FairValueOrderBacklog" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration"/>
  <xsd:element name="FairValueTaxContingency" id="mtls_FairValueTaxContingency" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration"/>
  <xsd:element name="TradePayablesRecognizedAsOfAcquisitionDate" id="mtls_TradePayablesRecognizedAsOfAcquisitionDate" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="instant"/>
  <xsd:element name="TaxPayablesRecognizedAsOfAcquisitionDate" id="mtls_TaxPayablesRecognizedAsOfAcquisitionDate" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="instant"/>
  <xsd:element name="OtherLiabilitiesRecognizedAsOfAcquisitionDate" id="mtls_OtherLiabilitiesRecognizedAsOfAcquisitionDate" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="instant"/>
  <xsd:element name="IndemnificationAssets" id="mtls_IndemnificationAssets" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="instant"/>
  <xsd:element name="TotalPurchaseConsiderationInCashNetOfIndemnificationAsset" id="mtls_TotalPurchaseConsiderationInCashNetOfIndemnificationAsset" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant"/>
  <xsd:element name="considerationInCashCenat" id="mtls_considerationInCashCenat" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant"/>
  <xsd:element name="CenatConsiderationPayable" id="mtls_CenatConsiderationPayable" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant"/>
  <xsd:element name="differenceFinalAndProvisionFairValueAssetsAndLiabilities" id="mtls_differenceFinalAndProvisionFairValueAssetsAndLiabilities" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="instant"/>
  <xsd:element name="fairValuePropertyPlantAndEquipment" id="mtls_fairValuePropertyPlantAndEquipment" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="instant"/>
  <xsd:element name="FairValueAdjustmentInventory" id="mtls_FairValueAdjustmentInventory" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="instant"/>
  <xsd:element name="acquisitionPricePaidInCashIncludingEscrow" id="mtls_acquisitionPricePaidInCashIncludingEscrow" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="instant"/>
  <xsd:element name="AcquisitionPriceInCashIncludingEscrow" id="mtls_AcquisitionPriceInCashIncludingEscrow" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="instant"/>
  <xsd:element name="RangeMinimumCumulativeProbabilityOverFiftyPercent" id="mtls_RangeMinimumCumulativeProbabilityOverFiftyPercent" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="instant"/>
  <xsd:element name="RangeMaximumCumulativeProbabilityOverFiftyPercent" id="mtls_RangeMaximumCumulativeProbabilityOverFiftyPercent" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="instant"/>
  <xsd:element name="MinimumContingentConsiderationOverTheComingYears" id="mtls_MinimumContingentConsiderationOverTheComingYears" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="instant"/>
  <xsd:element name="MaximumContingentConsiderationOverTheComingYears" id="mtls_MaximumContingentConsiderationOverTheComingYears" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="instant"/>
  <xsd:element name="FairValueOfTotalAssets" id="mtls_FairValueOfTotalAssets" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="instant"/>
  <xsd:element name="InnovationIncomeDeduction" id="mtls_InnovationIncomeDeduction" type="num:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="TotalAssetsRecognizedAsOfAcquisitionDate" id="mtls_TotalAssetsRecognizedAsOfAcquisitionDate" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="instant"/>
  <xsd:element name="TotalLiabilitiesRecognisedAsOfAcquisitionDate" id="mtls_TotalLiabilitiesRecognisedAsOfAcquisitionDate" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="instant"/>
  <xsd:element name="TradeReceivablesRecognisedAsOfAcquisitionDate" id="mtls_TradeReceivablesRecognisedAsOfAcquisitionDate" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="instant"/>
  <xsd:element name="OtherNonCurrentAssetsRecognizedAsOfAcquisitionDate" id="mtls_OtherNonCurrentAssetsRecognizedAsOfAcquisitionDate" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="instant"/>
  <xsd:element name="OtherIntangibleAssetsRecognizedAsOfAyquisitionDate" id="mtls_OtherIntangibleAssetsRecognizedAsOfAyquisitionDate" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="instant"/>
  <xsd:element name="FairValueContingentConsideration" id="mtls_FairValueContingentConsideration" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="instant"/>
  <xsd:element name="FairValueContingentConsiderationCurrentPortion" id="mtls_FairValueContingentConsiderationCurrentPortion" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="instant"/>
  <xsd:element name="CapitalIncreaseCashNumberOfShares" id="mtls_CapitalIncreaseCashNumberOfShares" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant"/>
  <xsd:element name="CapitalIncreaseExerciseWarrantsNumberOfShares" id="mtls_CapitalIncreaseExerciseWarrantsNumberOfShares" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant"/>
  <xsd:element name="disclosureOfJointVenturesTablesTextBlock" id="mtls_disclosureOfJointVenturesTablesTextBlock" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="DisclosureOfFutureMinimumLeasePaymentsTextBlock" id="mtls_DisclosureOfFutureMinimumLeasePaymentsTextBlock" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="NetProfitLossUsedForTheEarningsPerShareCalculationTextBlock" id="mtls_NetProfitLossUsedForTheEarningsPerShareCalculationTextBlock" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="ShareDataUsedForTheEarningsPerShareCalculationTextBlock" id="mtls_ShareDataUsedForTheEarningsPerShareCalculationTextBlock" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="disclosureOfCostOfSalesTablesTextBlock" id="mtls_disclosureOfCostOfSalesTablesTextBlock" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="disclosureOfResearchAndDevelopmentExpensesTablesTextBlock" id="mtls_disclosureOfResearchAndDevelopmentExpensesTablesTextBlock" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="disclosureOfSalesAndMarketingExpensesTablesTextBlock" id="mtls_disclosureOfSalesAndMarketingExpensesTablesTextBlock" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="disclosureOfGeneralAndAdministrativeExpensesTablesTextBlock" id="mtls_disclosureOfGeneralAndAdministrativeExpensesTablesTextBlock" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="disclosureOfNetOtherOperatingIncomeExpenseTablesTextBlock" id="mtls_disclosureOfNetOtherOperatingIncomeExpenseTablesTextBlock" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="disclosureOfRelationshipBetweenTaxExpenseAndAccountingProfitTablesTextBlock" id="mtls_disclosureOfRelationshipBetweenTaxExpenseAndAccountingProfitTablesTextBlock" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="disclosureOfPayrollExpenseTablesTextBlock" id="mtls_disclosureOfPayrollExpenseTablesTextBlock" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="revenueByCategoryTablesTextBlock" id="mtls_revenueByCategoryTablesTextBlock" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="copyOfrevenueByCategoryTablesTextBlock" id="mtls_copyOfrevenueByCategoryTablesTextBlock" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="DisclosureOfOtherNonCurrentLiabilitiesTablesTextBlock" id="mtls_DisclosureOfOtherNonCurrentLiabilitiesTablesTextBlock" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="DisclosureOfTaxPayablesExplanatory" id="mtls_DisclosureOfTaxPayablesExplanatory" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="DisclosureOfTaxPayablesTextBlockExplanatory" id="mtls_DisclosureOfTaxPayablesTextBlockExplanatory" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="DisclosureOfImpairmentLossreversalOfImparementLossOnTradeReceivablesTextBlock" id="mtls_DisclosureOfImpairmentLossreversalOfImparementLossOnTradeReceivablesTextBlock" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="acquisitionOfAldemaTableTextBlock" id="mtls_acquisitionOfAldemaTableTextBlock" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="acquisitionOfCenatTableTextBlock" id="mtls_acquisitionOfCenatTableTextBlock" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="acquisitionOfEprototypyTableTextBlock" id="mtls_acquisitionOfEprototypyTableTextBlock" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="acquisitionOfOrthoviewTableTextBlock" id="mtls_acquisitionOfOrthoviewTableTextBlock" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="AcquisitionOfAcTechTableTextBlock" id="mtls_AcquisitionOfAcTechTableTextBlock" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="disclosureIncomeAndExpensesTextBlock" id="mtls_disclosureIncomeAndExpensesTextBlock" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="IfrsCatchUpTextBlock" id="mtls_IfrsCatchUpTextBlock" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="IfrsBalanceSheetTextBlock" id="mtls_IfrsBalanceSheetTextBlock" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="IfrsIncomeStatementTextBlock" id="mtls_IfrsIncomeStatementTextBlock" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="RestatementActechBalanceSheetTextBlock" id="mtls_RestatementActechBalanceSheetTextBlock" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="RestatementActechIncomeStatementTextBlock" id="mtls_RestatementActechIncomeStatementTextBlock" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="DisclosureOfAgeingOfTradeReceivablesTextBlock" id="mtls_DisclosureOfAgeingOfTradeReceivablesTextBlock" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="DisclosureOfTermsAndConditionsOfShareBasedPaymentPlanArrangementsOfTheParentTextBlock" id="mtls_DisclosureOfTermsAndConditionsOfShareBasedPaymentPlanArrangementsOfTheParentTextBlock" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="DisclosureOfTermsAndConditionsOfShareBasedPaymentPlanArrangementsOfTheIpoWarrantPlanTextBlock" id="mtls_DisclosureOfTermsAndConditionsOfShareBasedPaymentPlanArrangementsOfTheIpoWarrantPlanTextBlock" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="DisclosureOfTermsAndConditionsOfShareBasedPaymentPlanArrangementsOfTheTwothousandfifteenWarrantPlanTextBlock" id="mtls_DisclosureOfTermsAndConditionsOfShareBasedPaymentPlanArrangementsOfTheTwothousandfifteenWarrantPlanTextBlock" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="DisclosureOfInputsIntoTheModelOfEquitySettledShareBasedPaymentPlansTextBlock" id="mtls_DisclosureOfInputsIntoTheModelOfEquitySettledShareBasedPaymentPlansTextBlock" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="DisclosureOfTermsAndConditionsOfShareBasedPaymentPlanArrangementsOfTheCashSettledPlansTextBlock" id="mtls_DisclosureOfTermsAndConditionsOfShareBasedPaymentPlanArrangementsOfTheCashSettledPlansTextBlock" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="DisclosureOfInputsIntoTheModelOfCashSettledShareBasedPaymentPlansTextBlock" id="mtls_DisclosureOfInputsIntoTheModelOfCashSettledShareBasedPaymentPlansTextBlock" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="DisclosureOfTermsAndConditionsOfShareBasedPaymentPlanArrangementsOfTheRapidfitPlanTextBlock" id="mtls_DisclosureOfTermsAndConditionsOfShareBasedPaymentPlanArrangementsOfTheRapidfitPlanTextBlock" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="DisclosureOfInputsIntoTheModelOfTheRapidfitPlanTextBlock" id="mtls_DisclosureOfInputsIntoTheModelOfTheRapidfitPlanTextBlock" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="DisclosureOfSegmentEbitdaTextBlock" id="mtls_DisclosureOfSegmentEbitdaTextBlock" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="DisclosureOfMovementCarryingValueOfJointVentureTextBlock" id="mtls_DisclosureOfMovementCarryingValueOfJointVentureTextBlock" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="DisclosureOfDetailedInformationJointVentureExplanatoryTextBlock" id="mtls_DisclosureOfDetailedInformationJointVentureExplanatoryTextBlock" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="inventoryAbstract" id="mtls_inventoryAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="DocumentAndEntityInformationAbstract" id="mtls_DocumentAndEntityInformationAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="DisclosureFairValueFinancialAssetsAbstract" id="mtls_DisclosureFairValueFinancialAssetsAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="DisclosureFairValueFinancialLiabilitiesAbstract" id="mtls_DisclosureFairValueFinancialLiabilitiesAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="disclosureIncomeAndExpensesAbstract" id="mtls_disclosureIncomeAndExpensesAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="IfrsCatchUpAdjustmentAbstract" id="mtls_IfrsCatchUpAdjustmentAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="BalanceSheetImpactAbstract" id="mtls_BalanceSheetImpactAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="IncomeStatementImpactAbstract" id="mtls_IncomeStatementImpactAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="RestatementActechBalanceSheetAbstract" id="mtls_RestatementActechBalanceSheetAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="RestatementActechIncomeStatementAbstract" id="mtls_RestatementActechIncomeStatementAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="EventsSubsequentToTheStatementOfFinancialPositionDateAbstract" id="mtls_EventsSubsequentToTheStatementOfFinancialPositionDateAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="IfrsCatchUpAdjustmentSoftware" id="mtls_IfrsCatchUpAdjustmentSoftware" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:balance="debit" xbrli:periodType="instant"/>
  <xsd:element name="IfrsCatchUpAdjustmentMedical" id="mtls_IfrsCatchUpAdjustmentMedical" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:balance="debit" xbrli:periodType="instant"/>
  <xsd:element name="WrittenPutOptionExpenseOfThePeriod" id="mtls_WrittenPutOptionExpenseOfThePeriod" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="EventsSubsequentToTheStatementOfFinancialPositionDate" id="mtls_EventsSubsequentToTheStatementOfFinancialPositionDate" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration"/>
  <xsd:element name="impactOnIncomeStatementWrittenPutOption" id="mtls_impactOnIncomeStatementWrittenPutOption" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration"/>
  <xsd:element name="IfrsCatchUpAdjustmentManufacturing" id="mtls_IfrsCatchUpAdjustmentManufacturing" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:balance="debit" xbrli:periodType="instant"/>
  <xsd:element name="IfrsCatchUpAdjustmentTotal" id="mtls_IfrsCatchUpAdjustmentTotal" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:balance="debit" xbrli:periodType="instant"/>
  <xsd:element name="IfrsCatchUpAdjustmentBiometZimmerAndSynthesImplants" id="mtls_IfrsCatchUpAdjustmentBiometZimmerAndSynthesImplants" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:balance="debit" xbrli:periodType="instant"/>
  <xsd:element name="IfrsCatchUpAdjustmentSynthesGuides" id="mtls_IfrsCatchUpAdjustmentSynthesGuides" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:balance="debit" xbrli:periodType="instant"/>
  <xsd:element name="summaryOfSignificantAccountingPoliciesAbstract" id="mtls_summaryOfSignificantAccountingPoliciesAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="NewStandardsNotYetAdoptedIFRS16Abstract" id="mtls_NewStandardsNotYetAdoptedIFRS16Abstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="DescriptionOfAccountingPolicyForInventoryAndContractInProgressExplanatory" id="mtls_DescriptionOfAccountingPolicyForInventoryAndContractInProgressExplanatory" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="DetailsExpenseAndWeightedAverageAbstract" id="mtls_DetailsExpenseAndWeightedAverageAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="DetailsExpenseAndWeightedAverageTable" id="mtls_DetailsExpenseAndWeightedAverageTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="DisclosureLoansAndBorrowingsDetailTable" id="mtls_DisclosureLoansAndBorrowingsDetailTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="DisclosureMovementTableDetailTable" id="mtls_DisclosureMovementTableDetailTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="DetailsLoansAndBorrowingsNarrativeDetailTable" id="mtls_DetailsLoansAndBorrowingsNarrativeDetailTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="DisclosureOfRapdriftDetailsGrantsAbstract" id="mtls_DisclosureOfRapdriftDetailsGrantsAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="DetailMovementTableDetailLineItemsAbstract" id="mtls_DetailMovementTableDetailLineItemsAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="DetailsExpenseAndWeightedAverageLineItems" id="mtls_DetailsExpenseAndWeightedAverageLineItems" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="NewTableOverviewAbstract" id="mtls_NewTableOverviewAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="NonCashAndOperationalAdjustmentsAbstract" id="mtls_NonCashAndOperationalAdjustmentsAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="WorkingCapitalAdjustmentAndIncomeTaxPaidAbstract" id="mtls_WorkingCapitalAdjustmentAndIncomeTaxPaidAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="DisclosureLoansAndBorrowingsDetailLineItems" id="mtls_DisclosureLoansAndBorrowingsDetailLineItems" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="DisclosureOfMovementTableAbstract" id="mtls_DisclosureOfMovementTableAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="DisclosureOfTextValuesLoansAndBorrowingsAbstract" id="mtls_DisclosureOfTextValuesLoansAndBorrowingsAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="DetailsLoansAndBorrowingsNarrativeDetailLineItems" id="mtls_DetailsLoansAndBorrowingsNarrativeDetailLineItems" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="DetailsExpenseAndWeightedAverageAxis" id="mtls_DetailsExpenseAndWeightedAverageAxis" type="xbrli:stringItemType" substitutionGroup="xbrldt:dimensionItem" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="JointVenturesDetailMovementAxis" id="mtls_JointVenturesDetailMovementAxis" type="xbrli:stringItemType" substitutionGroup="xbrldt:dimensionItem" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="DisclosureOfDetailsGrantsMaterialiseCashSettledAbstract" id="mtls_DisclosureOfDetailsGrantsMaterialiseCashSettledAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="DetailsExpenseAndWeightedAverageDomainMember" id="mtls_DetailsExpenseAndWeightedAverageDomainMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="JointVenturesDetailMovementMember" id="mtls_JointVenturesDetailMovementMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="DetailsGrantsMaterialiseEquitySettledAbstract" id="mtls_DetailsGrantsMaterialiseEquitySettledAbstract" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="overviewOfConsolidatedEntitiesAbstract" id="mtls_overviewOfConsolidatedEntitiesAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="disclosureOfInventoriesTextBlock" id="mtls_disclosureOfInventoriesTextBlock" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="DisclosureOfOtherAssetsTextBlock" id="mtls_DisclosureOfOtherAssetsTextBlock" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="risksAbstract" id="mtls_risksAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="disclosureOfForeignExchangeRiskTextBlock" id="mtls_disclosureOfForeignExchangeRiskTextBlock" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="disclosureOfInterestRateRiskTextBlock" id="mtls_disclosureOfInterestRateRiskTextBlock" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="disclosureOfGoodwillAbstract" id="mtls_disclosureOfGoodwillAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="corporateInformationAbstract" id="mtls_corporateInformationAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="descriptionOfJudgementsAndChangesInJudgementsThatSignificantlyImpactTheRecognitionOfInternallyGeneratedIntangibleAssetsTextBlock" id="mtls_descriptionOfJudgementsAndChangesInJudgementsThatSignificantlyImpactTheRecognitionOfInternallyGeneratedIntangibleAssetsTextBlock" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="descriptionOfJudgementsAndChangesInJudgementsThatSignificantlyImpactTheDeterminationOfTheFairValuesInTheAccountingForShareBasedPaymentTransactionsTextBlock" id="mtls_descriptionOfJudgementsAndChangesInJudgementsThatSignificantlyImpactTheDeterminationOfTheFairValuesInTheAccountingForShareBasedPaymentTransactionsTextBlock" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="descriptionOfJudgementsAndChangesInJudgementsThatSignificantlyImpactTheRecognitionOfDeferredTaxAssetsTextBlock" id="mtls_descriptionOfJudgementsAndChangesInJudgementsThatSignificantlyImpactTheRecognitionOfDeferredTaxAssetsTextBlock" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="descriptionOfJudgementsAndChangesInJudgementsThatSignificantlyImpactTheImpairmentOfGoodwillIntangibleAssetsAndPropertyPlantAndEquipmentTextBlock" id="mtls_descriptionOfJudgementsAndChangesInJudgementsThatSignificantlyImpactTheImpairmentOfGoodwillIntangibleAssetsAndPropertyPlantAndEquipmentTextBlock" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="DescriptionOfJudgementsAndChangesInJudgementsThatSignificantlyImpactTheProvisionForExpectedCreditLossesOfTradeReceiveblesAndContractAssetsTextBlock" id="mtls_DescriptionOfJudgementsAndChangesInJudgementsThatSignificantlyImpactTheProvisionForExpectedCreditLossesOfTradeReceiveblesAndContractAssetsTextBlock" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="descriptionOfJudgementsAndChangesInJudgementsThatSignificantlyImpactTheDeterminationOfTheFairValuesInTheAccountingForBusinessCombinationsTextBlock" id="mtls_descriptionOfJudgementsAndChangesInJudgementsThatSignificantlyImpactTheDeterminationOfTheFairValuesInTheAccountingForBusinessCombinationsTextBlock" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="numberOfWarrantsGrantedKeyManagementPersonnel" id="mtls_numberOfWarrantsGrantedKeyManagementPersonnel" type="xbrli:decimalItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant"/>
  <xsd:element name="numberOfWarrantsOutstandingKeyManagementPersonnel" id="mtls_numberOfWarrantsOutstandingKeyManagementPersonnel" type="xbrli:decimalItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant"/>
  <xsd:element name="PercentageIncreaseUsdRate" id="mtls_PercentageIncreaseUsdRate" type="num:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant"/>
  <xsd:element name="MinimumQuaranteedReturn" id="mtls_MinimumQuaranteedReturn" type="num:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant"/>
  <xsd:element name="IFRS16TransitionBuilding" id="mtls_IFRS16TransitionBuilding" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant"/>
  <xsd:element name="IFRS16TransitionOther" id="mtls_IFRS16TransitionOther" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant"/>
  <xsd:element name="IFRS16TransitionTotal" id="mtls_IFRS16TransitionTotal" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant"/>
  <xsd:element name="IFRS16DepreciatonImpact" id="mtls_IFRS16DepreciatonImpact" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant"/>
  <xsd:element name="IFRS16TransitionVehicles" id="mtls_IFRS16TransitionVehicles" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant"/>
  <xsd:element name="MaximumQuaranteedReturn" id="mtls_MaximumQuaranteedReturn" type="num:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant"/>
  <xsd:element name="deferredTaxIncomeLossFromDeferredTaxAssets" id="mtls_deferredTaxIncomeLossFromDeferredTaxAssets" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration"/>
  <xsd:element name="deferredTaxIncomelossFromDeferredTaxliabilities" id="mtls_deferredTaxIncomelossFromDeferredTaxliabilities" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration"/>
  <xsd:element name="MinimumGuaranteedReturnEmployerContributions" id="mtls_MinimumGuaranteedReturnEmployerContributions" type="num:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant"/>
  <xsd:element name="MinimumGuaranteedReturnEmployeeContributions" id="mtls_MinimumGuaranteedReturnEmployeeContributions" type="num:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant"/>
  <xsd:element name="decreaseInNetResultWithChangeInUsdRate" id="mtls_decreaseInNetResultWithChangeInUsdRate" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration"/>
  <xsd:element name="increaseInNetResultWithChangeInUsdRate" id="mtls_increaseInNetResultWithChangeInUsdRate" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration"/>
  <xsd:element name="TotalPropertyPlantAndEquipmentPledgedAsSecurity" id="mtls_TotalPropertyPlantAndEquipmentPledgedAsSecurity" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="instant"/>
  <xsd:element name="totalOutstandingMortgagesAndPledges" id="mtls_totalOutstandingMortgagesAndPledges" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant"/>
  <xsd:element name="pledgesOnBusinessGoodwil" id="mtls_pledgesOnBusinessGoodwil" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant"/>
  <xsd:element name="sensivityAnalysisUsdRateMember" id="mtls_sensivityAnalysisUsdRateMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="FounderSharesMember" id="mtls_FounderSharesMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="TotalShareholdersCapitalMember" id="mtls_TotalShareholdersCapitalMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="TotalSharePremiumMember" id="mtls_TotalSharePremiumMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="AtCarryingVlueMember" id="mtls_AtCarryingVlueMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="CreditRiskAbstract" id="mtls_CreditRiskAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="sensivityAnalysisAbstract" id="mtls_sensivityAnalysisAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="BetweenTwoAndThreeYearsMember" id="mtls_BetweenTwoAndThreeYearsMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="nonexecutiveDirectorsOfTheGroupMember" id="mtls_nonexecutiveDirectorsOfTheGroupMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="shareholdersOfTheGroupMember" id="mtls_shareholdersOfTheGroupMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="BetweenFourAndFiveYearsMember" id="mtls_BetweenFourAndFiveYearsMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="futureFinanceChargeOnFinanceLeaseMember" id="mtls_futureFinanceChargeOnFinanceLeaseMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="presentValueOfMinimumLeasePaymentsMember" id="mtls_presentValueOfMinimumLeasePaymentsMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="eurValueForUsdRate" id="mtls_eurValueForUsdRate" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="instant"/>
  <xsd:element name="DilutiveEffectOfShareOptionsOrConvertibleInstrumentsOnNumberOfOrdinarySharesAbstract" id="mtls_DilutiveEffectOfShareOptionsOrConvertibleInstrumentsOnNumberOfOrdinarySharesAbstract" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="EffectOfDilutionInterestOnConvertibleBonds" id="mtls_EffectOfDilutionInterestOnConvertibleBonds" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant"/>
  <xsd:element name="TaxEffectOfTaxesOnOtherBasis" id="mtls_TaxEffectOfTaxesOnOtherBasis" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="UnusedTaxLossCarryForwardTaskCreditsAndOtherGroup" id="mtls_UnusedTaxLossCarryForwardTaskCreditsAndOtherGroup" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant"/>
  <xsd:element name="UnusedTaxLossCarryForwardTaxCreditsAndOtherMaterialiseNv" id="mtls_UnusedTaxLossCarryForwardTaxCreditsAndOtherMaterialiseNv" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant"/>
  <xsd:element name="UnusedTaxLossCarryForwardTaxCreditsandOther" id="mtls_UnusedTaxLossCarryForwardTaxCreditsandOther" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="instant"/>
  <xsd:element name="UnusedNotionalInterestDeduction" id="mtls_UnusedNotionalInterestDeduction" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant"/>
  <xsd:element name="DeferredTaxLiabilitiesOnPropertyPlantAndEquipment" id="mtls_DeferredTaxLiabilitiesOnPropertyPlantAndEquipment" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant"/>
  <xsd:element name="DeferredTaxLiabilitiesOnIntangibleAssets" id="mtls_DeferredTaxLiabilitiesOnIntangibleAssets" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant"/>
  <xsd:element name="DeferredTaxLiabilitiesOnInvestmentGrants" id="mtls_DeferredTaxLiabilitiesOnInvestmentGrants" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant"/>
  <xsd:element name="DeferredTaxLiabilitiesOnInventoryValuation" id="mtls_DeferredTaxLiabilitiesOnInventoryValuation" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant"/>
  <xsd:element name="DeferredTaxLiabilitiesOnTaxLossesNotionalInterestDeductionAndOtherTaxBenefits" id="mtls_DeferredTaxLiabilitiesOnTaxLossesNotionalInterestDeductionAndOtherTaxBenefits" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant"/>
  <xsd:element name="IncreaseDecreaseinDeferredTaxAssetsLiabilitiesMember" id="mtls_IncreaseDecreaseinDeferredTaxAssetsLiabilitiesMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="DeferredTaxAssetsOnTaxLossesNotionalInterestDeductionAndOtherTaxBenefits" id="mtls_DeferredTaxAssetsOnTaxLossesNotionalInterestDeductionAndOtherTaxBenefits" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant"/>
  <xsd:element name="DeferredTaxAssetsOnAmortizationDevelopmentAssetsAndOtherIntangibleAssets" id="mtls_DeferredTaxAssetsOnAmortizationDevelopmentAssetsAndOtherIntangibleAssets" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="instant"/>
  <xsd:element name="DeferredTaxAssetsOnDeferredRevenue" id="mtls_DeferredTaxAssetsOnDeferredRevenue" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="instant"/>
  <xsd:element name="DeferredTaxAssetsOnDepreciationPropertyPlantAndEquipment" id="mtls_DeferredTaxAssetsOnDepreciationPropertyPlantAndEquipment" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="instant"/>
  <xsd:element name="ConsolidatedReserves" id="mtls_ConsolidatedReserves" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration"/>
  <xsd:element name="reserves" id="mtls_reserves" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration"/>
  <xsd:element name="DeferredTaxAssetsOnBorrowingCost" id="mtls_DeferredTaxAssetsOnBorrowingCost" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="instant"/>
  <xsd:element name="DeferredTaxAssetsOnFinancialLeasings" id="mtls_DeferredTaxAssetsOnFinancialLeasings" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="instant"/>
  <xsd:element name="DeferredTaxAssetsOnInventory" id="mtls_DeferredTaxAssetsOnInventory" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="instant"/>
  <xsd:element name="DeferredTaxAssetsOnAOtherNonCurrentAssets" id="mtls_DeferredTaxAssetsOnAOtherNonCurrentAssets" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="instant"/>
  <xsd:element name="PercentageBelgianPatentIncomeDeduction" id="mtls_PercentageBelgianPatentIncomeDeduction" type="num:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant"/>
  <xsd:element name="AmortizationDiscountInterestFreeLoans" id="mtls_AmortizationDiscountInterestFreeLoans" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration"/>
  <xsd:element name="TaxCredits" id="mtls_TaxCredits" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant"/>
  <xsd:element name="CapitalizedExpenses" id="mtls_CapitalizedExpenses" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration"/>
  <xsd:element name="AmortizationIntangiblesPurchasePriceAllocation" id="mtls_AmortizationIntangiblesPurchasePriceAllocation" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration"/>
  <xsd:element name="AllowanceForDoubtfulDebtors" id="mtls_AllowanceForDoubtfulDebtors" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration"/>
  <xsd:element name="FairValueAdjustmentCenatLiability" id="mtls_FairValueAdjustmentCenatLiability" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration"/>
  <xsd:element name="PersonnelRelatedIncome" id="mtls_PersonnelRelatedIncome" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration"/>
  <xsd:element name="fairValueOptionRapidfit" id="mtls_fairValueOptionRapidfit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration"/>
  <xsd:element name="CapitalizedSoftwareDevelopmentNewPlanner" id="mtls_CapitalizedSoftwareDevelopmentNewPlanner" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration"/>
  <xsd:element name="Capitalized3DPrintedProductMedical" id="mtls_Capitalized3DPrintedProductMedical" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration"/>
  <xsd:element name="totalCapitalizedDevelopmentExpenses" id="mtls_totalCapitalizedDevelopmentExpenses" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration"/>
  <xsd:element name="NetForeignCurrencyExchangeGains" id="mtls_NetForeignCurrencyExchangeGains" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration"/>
  <xsd:element name="CostOfSalesLineItems" id="mtls_CostOfSalesLineItems" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="ResearchAndDevelopmentExpensesLineItems" id="mtls_ResearchAndDevelopmentExpensesLineItems" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="SalesAndMarketingLineItems" id="mtls_SalesAndMarketingLineItems" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="GeneralAndAdministrativeExpensesLineItems" id="mtls_GeneralAndAdministrativeExpensesLineItems" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="CreditRiskLineItems" id="mtls_CreditRiskLineItems" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="copyOfCreditRiskLineItems" id="mtls_copyOfCreditRiskLineItems" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="FairValueNarrativeAbstract" id="mtls_FairValueNarrativeAbstract" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="FinancialExpenseAbstract" id="mtls_FinancialExpenseAbstract" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="CurrentIncomeTaxesNarrativeLineItemsAbstract" id="mtls_CurrentIncomeTaxesNarrativeLineItemsAbstract" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="AmericaOtherThanUsaMember" id="mtls_AmericaOtherThanUsaMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="EuropeWithoutBelgiumMember" id="mtls_EuropeWithoutBelgiumMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="AsiaMember" id="mtls_AsiaMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="CostOfSalesTable" id="mtls_CostOfSalesTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="ResearchAndDevelopmentExpensesTable" id="mtls_ResearchAndDevelopmentExpensesTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="SalesAndMarketingExpensesTable" id="mtls_SalesAndMarketingExpensesTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="GeneralAndAdministrativeExpensesTable" id="mtls_GeneralAndAdministrativeExpensesTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="CreditRiskTable" id="mtls_CreditRiskTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="sensivityAnalysisTable" id="mtls_sensivityAnalysisTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="FairValueNarrativeTable" id="mtls_FairValueNarrativeTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="FinancialExpenseTable" id="mtls_FinancialExpenseTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="CurrentIncomeTaxesNarrativeTable" id="mtls_CurrentIncomeTaxesNarrativeTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="OtherCurrentAssetsNarrativeTable" id="mtls_OtherCurrentAssetsNarrativeTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="OtherNonCurrentAssetsTable" id="mtls_OtherNonCurrentAssetsTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="CostOfSalesAxis" id="mtls_CostOfSalesAxis" type="xbrli:stringItemType" substitutionGroup="xbrldt:dimensionItem" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="ResearchAndDevelopmentExpensesAxis" id="mtls_ResearchAndDevelopmentExpensesAxis" type="xbrli:stringItemType" substitutionGroup="xbrldt:dimensionItem" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="SalesAndMarketingExpensesAxis" id="mtls_SalesAndMarketingExpensesAxis" type="xbrli:stringItemType" substitutionGroup="xbrldt:dimensionItem" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="GeneralAndAdministrativeExpensesAxis" id="mtls_GeneralAndAdministrativeExpensesAxis" type="xbrli:stringItemType" substitutionGroup="xbrldt:dimensionItem" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="tradeReceivablesPartDueAxis" id="mtls_tradeReceivablesPartDueAxis" type="xbrli:stringItemType" substitutionGroup="xbrldt:dimensionItem" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="sensitivityAnalysisRatesAxis" id="mtls_sensitivityAnalysisRatesAxis" type="xbrli:stringItemType" substitutionGroup="xbrldt:dimensionItem" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="TotalCostOfSalesMember" id="mtls_TotalCostOfSalesMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="ConsolidatedEntityMember" id="mtls_ConsolidatedEntityMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="AllConsolidatedStatementsMember" id="mtls_AllConsolidatedStatementsMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="ResearchAndDevelopmentExpenseMember" id="mtls_ResearchAndDevelopmentExpenseMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="SalesAndMarketingExpensesMember" id="mtls_SalesAndMarketingExpensesMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="GeneralAndAdministrativeExpensesMember" id="mtls_GeneralAndAdministrativeExpensesMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="tradeReceivablesPartTotalDueMember" id="mtls_tradeReceivablesPartTotalDueMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="tradeReceivablesPartNonDueMember" id="mtls_tradeReceivablesPartNonDueMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="tradeReceivablesPartUpToThirtyDaysDueMember" id="mtls_tradeReceivablesPartUpToThirtyDaysDueMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="tradeReceivablesPartBetweenThirtyoneAndSixtyDaysDueMember" id="mtls_tradeReceivablesPartBetweenThirtyoneAndSixtyDaysDueMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="tradeReceivablesPartBetweenSixtyoneAndNinetyDaysDueMember" id="mtls_tradeReceivablesPartBetweenSixtyoneAndNinetyDaysDueMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="tradeReceivablesPartBetweenNinetyoneAndHundredeightyDaysDueMember" id="mtls_tradeReceivablesPartBetweenNinetyoneAndHundredeightyDaysDueMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="tradeReceivablesPartMoreThanHundredeightyoneDaysDueMember" id="mtls_tradeReceivablesPartMoreThanHundredeightyoneDaysDueMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="PurchaseOfGoodsAndServicesExpense" id="mtls_PurchaseOfGoodsAndServicesExpense" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration"/>
  <xsd:element name="AdditionsFinanceLeasesPropertyPlantAndEquipment" id="mtls_AdditionsFinanceLeasesPropertyPlantAndEquipment" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="instant"/>
  <xsd:element name="IncreaseThroughNewMachinesAndInstallationsPropertyPlantAndEquipment" id="mtls_IncreaseThroughNewMachinesAndInstallationsPropertyPlantAndEquipment" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="instant"/>
  <xsd:element name="IncreaseThroughComputerEquipmentPropertyPlantAndEquipment" id="mtls_IncreaseThroughComputerEquipmentPropertyPlantAndEquipment" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="instant"/>
  <xsd:element name="IncreaseThroughAcquiredLandPropertyPlantAndEquipment" id="mtls_IncreaseThroughAcquiredLandPropertyPlantAndEquipment" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="instant"/>
  <xsd:element name="IncreaseThroughAcquiredLandPolandPropertyPlantAndEquipment" id="mtls_IncreaseThroughAcquiredLandPolandPropertyPlantAndEquipment" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="instant"/>
  <xsd:element name="IncreaseThroughBuildingConstructionsPropertyPlantAndEquipment" id="mtls_IncreaseThroughBuildingConstructionsPropertyPlantAndEquipment" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="instant"/>
  <xsd:element name="IncreaseThroughOtherAcquisitionsPropertyPlantAndEquipment" id="mtls_IncreaseThroughOtherAcquisitionsPropertyPlantAndEquipment" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="instant"/>
  <xsd:element name="LandAndBuildingsInAssetsUnderConstructionPropertyPlantAndEquipment" id="mtls_LandAndBuildingsInAssetsUnderConstructionPropertyPlantAndEquipment" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="instant"/>
  <xsd:element name="InstalationsUnderConstructionPropertyPlantAndEquipment" id="mtls_InstalationsUnderConstructionPropertyPlantAndEquipment" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="instant"/>
  <xsd:element name="TotalNetFinanceLeasesMachineryPropertyPlantAndEquipment" id="mtls_TotalNetFinanceLeasesMachineryPropertyPlantAndEquipment" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="instant"/>
  <xsd:element name="TotalNetFinanceLeasesBuildingsPropertyPlantAndEquipment" id="mtls_TotalNetFinanceLeasesBuildingsPropertyPlantAndEquipment" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant"/>
  <xsd:element name="TotalNetFinanceLeasesPropertyPlantAndEquipment" id="mtls_TotalNetFinanceLeasesPropertyPlantAndEquipment" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="instant"/>
  <xsd:element name="CapitalExpendituresAbstract" id="mtls_CapitalExpendituresAbstract" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="RemainingAmortizationPeriodCustomerRelatedIntangibleAssetsAcquisitionCenat" id="mtls_RemainingAmortizationPeriodCustomerRelatedIntangibleAssetsAcquisitionCenat" type="xbrli:decimalItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant"/>
  <xsd:element name="RemainingAmortizationAcTech" id="mtls_RemainingAmortizationAcTech" type="xbrli:decimalItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant"/>
  <xsd:element name="RemainingAmortizationPeriodCustomerRelatedIntangibleAssetsAcquisitionEPrototypy" id="mtls_RemainingAmortizationPeriodCustomerRelatedIntangibleAssetsAcquisitionEPrototypy" type="xbrli:decimalItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant"/>
  <xsd:element name="RemainingAmortizationPeriodCustomerRelatedIntangibleAssetsAcquisitionOrthview" id="mtls_RemainingAmortizationPeriodCustomerRelatedIntangibleAssetsAcquisitionOrthview" type="xbrli:decimalItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant"/>
  <xsd:element name="RemainingAmortizationPeriodOnIntangiblesResultingFromBusinessCombinationsAbstract" id="mtls_RemainingAmortizationPeriodOnIntangiblesResultingFromBusinessCombinationsAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="OtherOperatingIncome" id="mtls_OtherOperatingIncome" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration"/>
  <xsd:element name="CorporateResearchAndDevelopmentExpense" id="mtls_CorporateResearchAndDevelopmentExpense" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration"/>
  <xsd:element name="CorporateHeadquarterExpense" id="mtls_CorporateHeadquarterExpense" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration"/>
  <xsd:element name="TotalRevenueRealizedInTheCountryOfDomicile" id="mtls_TotalRevenueRealizedInTheCountryOfDomicile" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration"/>
  <xsd:element name="EbitdaPercent" id="mtls_EbitdaPercent" type="num:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant"/>
  <xsd:element name="RelatedPartyLoanInterestPercent" id="mtls_RelatedPartyLoanInterestPercent" type="num:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant"/>
  <xsd:element name="KeurEightthousandsevenhundredfiftyOtherFacilityLoanGrossInterextPercentBottomRange" id="mtls_KeurEightthousandsevenhundredfiftyOtherFacilityLoanGrossInterextPercentBottomRange" type="num:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant"/>
  <xsd:element name="KeurEightthousandsevenhundredfiftyOtherFacilityLoanGrossInterextPercentTopRange" id="mtls_KeurEightthousandsevenhundredfiftyOtherFacilityLoanGrossInterextPercentTopRange" type="num:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant"/>
  <xsd:element name="OperatingSegmentsMaterialiseMedicalMember" id="mtls_OperatingSegmentsMaterialiseMedicalMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="TotalSegmentsRevenueMember" id="mtls_TotalSegmentsRevenueMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="ConsolidatedRevenueMember" id="mtls_ConsolidatedRevenueMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="UnallocatedSegmentRevenueMember" id="mtls_UnallocatedSegmentRevenueMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="OperatingSegmentsMaterialiseMember" id="mtls_OperatingSegmentsMaterialiseMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="OperatingSegmentsMaterialiseSoftwareMember" id="mtls_OperatingSegmentsMaterialiseSoftwareMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="CurrentAndNonCurrentAssetsAbstract" id="mtls_CurrentAndNonCurrentAssetsAbstract" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="DeferredGovernmentGrants" id="mtls_DeferredGovernmentGrants" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant"/>
  <xsd:element name="Ebitda" id="mtls_Ebitda" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration"/>
  <xsd:element name="DeferredOtherIncome" id="mtls_DeferredOtherIncome" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant"/>
  <xsd:element name="DeferredMaintenanceAndLicense" id="mtls_DeferredMaintenanceAndLicense" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant"/>
  <xsd:element name="DeferredProjectFees" id="mtls_DeferredProjectFees" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant"/>
  <xsd:element name="OtherOtherNoncurrentLiabilities" id="mtls_OtherOtherNoncurrentLiabilities" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant"/>
  <xsd:element name="ProFormaRevenueAndProfitLossOfCombinedEntityAbstract" id="mtls_ProFormaRevenueAndProfitLossOfCombinedEntityAbstract" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="MiscellaneousInvestmentLoansAbstract" id="mtls_MiscellaneousInvestmentLoansAbstract" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="FinanceLeaseObligationsThirdPartiesAbstract" id="mtls_FinanceLeaseObligationsThirdPartiesAbstract" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="FinanceLeaseObligationsRelatedPartiesAbstract" id="mtls_FinanceLeaseObligationsRelatedPartiesAbstract" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="RelatedPartyLoanAbstract" id="mtls_RelatedPartyLoanAbstract" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="AcquisitionPriceInDocumentCurrency" id="mtls_AcquisitionPriceInDocumentCurrency" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant"/>
  <xsd:element name="ContributionToTheRevenueAndNetLossAbstract" id="mtls_ContributionToTheRevenueAndNetLossAbstract" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="DurationInvestmentsHeldToMaturity" id="mtls_DurationInvestmentsHeldToMaturity" type="xbrli:decimalItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant"/>
  <xsd:element name="UsageImpairmentLossRecognisedInProfitOrLossTradeReceivables" id="mtls_UsageImpairmentLossRecognisedInProfitOrLossTradeReceivables" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant"/>
  <xsd:element name="ImpairmentLossReversalOfImpairmentLossRecognisedInProfitOrLossTradeReceivablesBeginningOfPeriod" id="mtls_ImpairmentLossReversalOfImpairmentLossRecognisedInProfitOrLossTradeReceivablesBeginningOfPeriod" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant"/>
  <xsd:element name="TradeReceiveblesAccumulatedAmortizationPeriod" id="mtls_TradeReceiveblesAccumulatedAmortizationPeriod" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant"/>
  <xsd:element name="TradeReceivablesAccumulatedAmortization" id="mtls_TradeReceivablesAccumulatedAmortization" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant"/>
  <xsd:element name="TradeReceivablesGrossCarryingAmount" id="mtls_TradeReceivablesGrossCarryingAmount" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="instant"/>
  <xsd:element name="TaxCreditsOtherCurrentAssets" id="mtls_TaxCreditsOtherCurrentAssets" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="instant"/>
  <xsd:element name="DeferredChargesOtherCurrentAssets" id="mtls_DeferredChargesOtherCurrentAssets" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="instant"/>
  <xsd:element name="TotalAmountInventoryWrittenOffAsAnExpense" id="mtls_TotalAmountInventoryWrittenOffAsAnExpense" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration"/>
  <xsd:element name="InventoryAbstract" id="mtls_InventoryAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="GoodwillLineItemsAbstract" id="mtls_GoodwillLineItemsAbstract" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="TaxCreditsOtherNoncurrentAssets" id="mtls_TaxCreditsOtherNoncurrentAssets" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="instant"/>
  <xsd:element name="AdditionInInvestmentsInSubsidiariesJointVenturesAndAssociates" id="mtls_AdditionInInvestmentsInSubsidiariesJointVenturesAndAssociates" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="instant"/>
  <xsd:element name="TransferFromReceivablesSubsidiariesJointVenturesAndAssociates" id="mtls_TransferFromReceivablesSubsidiariesJointVenturesAndAssociates" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="instant"/>
  <xsd:element name="RetainedEarningsAdjustment" id="mtls_RetainedEarningsAdjustment" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant"/>
  <xsd:element name="LeasedAssetsMember" id="mtls_LeasedAssetsMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="TechnologybasedandCustomerrelatedIntangibleAssetsMember" id="mtls_TechnologybasedandCustomerrelatedIntangibleAssetsMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="TaxLossesUtilized" id="mtls_TaxLossesUtilized" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant"/>
  <xsd:element name="IncreaseNetProfitRecognitionAllDeferredTaxAssets" id="mtls_IncreaseNetProfitRecognitionAllDeferredTaxAssets" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration"/>
  <xsd:element name="DeferredTaxAssetsRecognisedForTaxLossesAndCredits" id="mtls_DeferredTaxAssetsRecognisedForTaxLossesAndCredits" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="instant"/>
  <xsd:element name="BelgianPatentIncomeDeductionPercentage" id="mtls_BelgianPatentIncomeDeductionPercentage" type="num:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant"/>
  <xsd:element name="NotionalInterestDeduction" id="mtls_NotionalInterestDeduction" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant"/>
  <xsd:element name="OtherTaxCredits" id="mtls_OtherTaxCredits" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant"/>
  <xsd:element name="TaxLossesCarriedForward" id="mtls_TaxLossesCarriedForward" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant"/>
  <xsd:element name="SignificantAccountingJudgementsEstimatesAndAssumptionsAbstract" id="mtls_SignificantAccountingJudgementsEstimatesAndAssumptionsAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="IFRS15IncomeStatementImpactAbstract" id="mtls_IFRS15IncomeStatementImpactAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="IFRS15BalanceSheetImpactAbstract" id="mtls_IFRS15BalanceSheetImpactAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="ActechBalanceSheetRestatementImpactAbstract" id="mtls_ActechBalanceSheetRestatementImpactAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="ActechIncomeStatementRestatementImpactAbstract" id="mtls_ActechIncomeStatementRestatementImpactAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="DiscountRateIncreaseForSensitivityAnalysis" id="mtls_DiscountRateIncreaseForSensitivityAnalysis" type="num:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant"/>
  <xsd:element name="CarryingAmountOfAssetOrCashgeneratingUnit" id="mtls_CarryingAmountOfAssetOrCashgeneratingUnit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="instant"/>
  <xsd:element name="UnitRapidfitMember" id="mtls_UnitRapidfitMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="UnitMatNvSamBeMember" id="mtls_UnitMatNvSamBeMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="UnitMatNvAmsBeMember" id="mtls_UnitMatNvAmsBeMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="GoodwillAllocatedToCGUMatNvSamBe" id="mtls_GoodwillAllocatedToCGUMatNvSamBe" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="instant"/>
  <xsd:element name="GoodwillAllocatedToCGUEProtptype" id="mtls_GoodwillAllocatedToCGUEProtptype" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="instant"/>
  <xsd:element name="GoodwillAllocatedToCGURapidfit" id="mtls_GoodwillAllocatedToCGURapidfit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="instant"/>
  <xsd:element name="GoodwillAllocatedToCGUOrthoView" id="mtls_GoodwillAllocatedToCGUOrthoView" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="instant"/>
  <xsd:element name="GoodwillAllocatedToCGUMatNvManufacturing" id="mtls_GoodwillAllocatedToCGUMatNvManufacturing" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="instant"/>
  <xsd:element name="OtherAssetsRecognisedAsOfAcquisitionDate" id="mtls_OtherAssetsRecognisedAsOfAcquisitionDate" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="instant"/>
  <xsd:element name="AccruedCharges" id="mtls_AccruedCharges" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant"/>
  <xsd:element name="deferredIncome" id="mtls_deferredIncome" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant"/>
  <xsd:element name="UnitOrthoviewMember" id="mtls_UnitOrthoviewMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="UnitEprototypyMember" id="mtls_UnitEprototypyMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="AdvMachMember" id="mtls_AdvMachMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="MacramMember" id="mtls_MacramMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="MatMetalMember" id="mtls_MatMetalMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="AcTechMember" id="mtls_AcTechMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="GeneralGeneratedMember" id="mtls_GeneralGeneratedMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="CustomerRelationships" id="mtls_CustomerRelationships" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="instant"/>
  <xsd:element name="UnitCenatMember" id="mtls_UnitCenatMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="UnitAldemaMember" id="mtls_UnitAldemaMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="DisclosureFairValueAxis" id="mtls_DisclosureFairValueAxis" type="xbrli:stringItemType" substitutionGroup="xbrldt:dimensionItem" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="DisclosureOfIFRS15Axis" id="mtls_DisclosureOfIFRS15Axis" type="xbrli:stringItemType" substitutionGroup="xbrldt:dimensionItem" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="RestatementActechBSAxis" id="mtls_RestatementActechBSAxis" type="xbrli:stringItemType" substitutionGroup="xbrldt:dimensionItem" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="RestatementActechIncomeStatementAxis" id="mtls_RestatementActechIncomeStatementAxis" type="xbrli:stringItemType" substitutionGroup="xbrldt:dimensionItem" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="AcquisitiondateFairValueOfReceivablesAcquired" id="mtls_AcquisitiondateFairValueOfReceivablesAcquired" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="instant"/>
  <xsd:element name="FairValueOfAcquiredOtherAssets" id="mtls_FairValueOfAcquiredOtherAssets" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="instant"/>
  <xsd:element name="OtherAssetsAbstract" id="mtls_OtherAssetsAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="DisclosureOfOperatingSegmentsNarrativeAbstract" id="mtls_DisclosureOfOperatingSegmentsNarrativeAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="FairValueOfAcquiredIntangibleAssetsOther" id="mtls_FairValueOfAcquiredIntangibleAssetsOther" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="instant"/>
  <xsd:element name="FairValueOfAcquiredIntangibleAssetsFavorableContract" id="mtls_FairValueOfAcquiredIntangibleAssetsFavorableContract" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="instant"/>
  <xsd:element name="FairValueAtAcquisitionDateMember" id="mtls_FairValueAtAcquisitionDateMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="SubsequentIFRS15AdjustmentMember" id="mtls_SubsequentIFRS15AdjustmentMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="CatchUpAdjustmentsIFRS15Member" id="mtls_CatchUpAdjustmentsIFRS15Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="ActechChangeInAccountingPolicyMember" id="mtls_ActechChangeInAccountingPolicyMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="ActechAsRestatedMember" id="mtls_ActechAsRestatedMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="ActechIFRS3BusinessCombinationMember" id="mtls_ActechIFRS3BusinessCombinationMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="ActechAsPreviouslyReportedMember" id="mtls_ActechAsPreviouslyReportedMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="AmountsWithoutAdoptionOfIFRS15Member" id="mtls_AmountsWithoutAdoptionOfIFRS15Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="FairValueAdjustmentsMember" id="mtls_FairValueAdjustmentsMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="CarryingValueAtAcquisitionDateMember" id="mtls_CarryingValueAtAcquisitionDateMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="FairValueOfAcquiredOtherCurrentAssets" id="mtls_FairValueOfAcquiredOtherCurrentAssets" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="instant"/>
  <xsd:element name="GainOfFairValueAdjustmentOfContingentConsideration" id="mtls_GainOfFairValueAdjustmentOfContingentConsideration" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration"/>
  <xsd:element name="paymentShareholders2018" id="mtls_paymentShareholders2018" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration"/>
  <xsd:element name="paymentShareholders21Jan2019" id="mtls_paymentShareholders21Jan2019" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration"/>
  <xsd:element name="FairValueOfContingentConsiderationAsPerFinalAccountingDate" id="mtls_FairValueOfContingentConsiderationAsPerFinalAccountingDate" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration"/>
  <xsd:element name="ContingentConsiderationOverComingYears" id="mtls_ContingentConsiderationOverComingYears" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration"/>
  <xsd:element name="CumulativeProbabilityOfUndiscountedEarnOutScenarios" id="mtls_CumulativeProbabilityOfUndiscountedEarnOutScenarios" type="num:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant"/>
  <xsd:element name="MaximumProbabilityOfUndiscountedEarnOutScenarios" id="mtls_MaximumProbabilityOfUndiscountedEarnOutScenarios" type="num:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant"/>
  <xsd:element name="MinimumProbabilityOfUndiscountedEarnOutScenarios" id="mtls_MinimumProbabilityOfUndiscountedEarnOutScenarios" type="num:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant"/>
  <xsd:element name="MaximumContingentConsiderationOfUndiscountedEarnOutScenarios" id="mtls_MaximumContingentConsiderationOfUndiscountedEarnOutScenarios" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration"/>
  <xsd:element name="MinimumContingentConsiderationOfUndiscountedEarnOutScenarios" id="mtls_MinimumContingentConsiderationOfUndiscountedEarnOutScenarios" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration"/>
  <xsd:element name="FairValueOfAcquiredCashAndCashEquivalents" id="mtls_FairValueOfAcquiredCashAndCashEquivalents" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="instant"/>
  <xsd:element name="OtherLiabilitiesIncurred" id="mtls_OtherLiabilitiesIncurred" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant"/>
  <xsd:element name="AcquisitionPrice" id="mtls_AcquisitionPrice" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant"/>
  <xsd:element name="TradePayablesIncurred" id="mtls_TradePayablesIncurred" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant"/>
  <xsd:element name="copyOfTradePayablesIncurred" id="mtls_copyOfTradePayablesIncurred" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant"/>
  <xsd:element name="FinancialLiabilitiesIncurred" id="mtls_FinancialLiabilitiesIncurred" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant"/>
  <xsd:element name="DeferredTaxLiabilitiesIncurred" id="mtls_DeferredTaxLiabilitiesIncurred" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant"/>
  <xsd:element name="DeferredIncomeClassifiedAsCurrentBeforeReclassification" id="mtls_DeferredIncomeClassifiedAsCurrentBeforeReclassification" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant"/>
  <xsd:element name="DeferredIncomeClassifiedAsNonCurrentBeforeReclassification" id="mtls_DeferredIncomeClassifiedAsNonCurrentBeforeReclassification" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant"/>
  <xsd:element name="ProceedsFromExcerciseOfWarrants" id="mtls_ProceedsFromExcerciseOfWarrants" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration"/>
  <xsd:element name="ProceedsFromContributionsByCapitalIncreaseOfNonControllingInterests" id="mtls_ProceedsFromContributionsByCapitalIncreaseOfNonControllingInterests" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration"/>
  <xsd:element name="PaymentsForPurchaseOfNonControllingInterest" id="mtls_PaymentsForPurchaseOfNonControllingInterest" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration"/>
  <xsd:element name="AdjustmentsForGovernmentGrants" id="mtls_AdjustmentsForGovernmentGrants" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration"/>
  <xsd:element name="IncreaseDecreaseInEquityOfSubsidiaryThroughExerciseOfWarrants" id="mtls_IncreaseDecreaseInEquityOfSubsidiaryThroughExerciseOfWarrants" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration"/>
  <xsd:element name="TransferShareCapitalToSharePremium" id="mtls_TransferShareCapitalToSharePremium" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration"/>
  <xsd:element name="IncreaseDecreaseInEstimatedRedemptionAmountOnWrittenPutOptionOnNoncontrollingInterests" id="mtls_IncreaseDecreaseInEstimatedRedemptionAmountOnWrittenPutOptionOnNoncontrollingInterests" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration"/>
  <xsd:element name="IncreaseDecreaseOfAdoptingIfrs15" id="mtls_IncreaseDecreaseOfAdoptingIfrs15" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration"/>
  <xsd:element name="ShareholdersEquityAdjustedBalance" id="mtls_ShareholdersEquityAdjustedBalance" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration"/>
  <xsd:element name="BasisOfPreperation" id="mtls_BasisOfPreperation" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="TotalCashFlowOfAcquiredBusinessCombination" id="mtls_TotalCashFlowOfAcquiredBusinessCombination" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="instant"/>
  <xsd:element name="TaxEffectOfCapitalizedInitialPublicOfferingTransactionCosts" id="mtls_TaxEffectOfCapitalizedInitialPublicOfferingTransactionCosts" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="TaxEffectOfResearchAndDevelopmentTaxCreditsAndPatentIncomeDeduction" id="mtls_TaxEffectOfResearchAndDevelopmentTaxCreditsAndPatentIncomeDeduction" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="BasisOfPreparationTableTextBlock" id="mtls_BasisOfPreparationTableTextBlock" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="TaxEffectOfNotionalInterestDeduction" id="mtls_TaxEffectOfNotionalInterestDeduction" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant"/>
  <xsd:element name="KeurEightteenthousandSecuredBankLoanConstructionPoland" id="mtls_KeurEightteenthousandSecuredBankLoanConstructionPoland" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant"/>
  <xsd:element name="TaxEffectOfNonRecognitionOfDeferredTaxAssets" id="mtls_TaxEffectOfNonRecognitionOfDeferredTaxAssets" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="TaxEffectOfRecognitionOfDeferredTaxAssetsOnPreviousYearsTaxLosses" id="mtls_TaxEffectOfRecognitionOfDeferredTaxAssetsOnPreviousYearsTaxLosses" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="OtherCurrentLiabilitiesUndiscountedCashFlows" id="mtls_OtherCurrentLiabilitiesUndiscountedCashFlows" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant"/>
  <xsd:element name="UsdImpactOnCashAndTermAccountsHeldInUsd" id="mtls_UsdImpactOnCashAndTermAccountsHeldInUsd" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant"/>
  <xsd:element name="UndrawnLinesOfCredit" id="mtls_UndrawnLinesOfCredit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant"/>
  <xsd:element name="EibFinanceContractUndrawnLinesOfCredit" id="mtls_EibFinanceContractUndrawnLinesOfCredit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant"/>
  <xsd:element name="mortgagesAndPledges" id="mtls_mortgagesAndPledges" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="otherCommitmentsAbstract" id="mtls_otherCommitmentsAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="refinancedLeaseCommitments" id="mtls_refinancedLeaseCommitments" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant"/>
  <xsd:element name="printerGermany" id="mtls_printerGermany" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant"/>
  <xsd:element name="officeMalaysia" id="mtls_officeMalaysia" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant"/>
  <xsd:element name="interestExpenseRelatedPartyTransactions" id="mtls_interestExpenseRelatedPartyTransactions" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="DisclosureOfTradeReceivablesTextBlock" id="mtls_DisclosureOfTradeReceivablesTextBlock" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="DisclosureOfCashAndCashEquivalentsTablesTextBlock" id="mtls_DisclosureOfCashAndCashEquivalentsTablesTextBlock" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="DisclosureOfDeferredIncomeTableExplanatory" id="mtls_DisclosureOfDeferredIncomeTableExplanatory" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="DisclosureOfOperatingSegmentsTableTextBlock" id="mtls_DisclosureOfOperatingSegmentsTableTextBlock" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="DisclosureOfInterestsInSubsidiariesTextBlock" id="mtls_DisclosureOfInterestsInSubsidiariesTextBlock" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="DisclosureOfDetailedInformationOfOtherCurrentLiabilitiesTextBlock" id="mtls_DisclosureOfDetailedInformationOfOtherCurrentLiabilitiesTextBlock" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="GoodwillNotDeductibleForTaxPurposes" id="mtls_GoodwillNotDeductibleForTaxPurposes" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="instant"/>
  <xsd:element name="GoodwillNotExpectedDeductibleForTaxPurposes" id="mtls_GoodwillNotExpectedDeductibleForTaxPurposes" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="instant"/>
  <xsd:element name="ContractsInProgress" id="mtls_ContractsInProgress" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant"/>
  <xsd:element name="OtherOtherNoncurrentAssets" id="mtls_OtherOtherNoncurrentAssets" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="instant"/>
  <xsd:element name="nonListedEquityInvestments" id="mtls_nonListedEquityInvestments" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="instant"/>
  <xsd:element name="TotalEquityInstrumentsDesignatedAtFairValueThroughOCI" id="mtls_TotalEquityInstrumentsDesignatedAtFairValueThroughOCI" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="instant"/>
  <xsd:element name="RelatedPartyLoan" id="mtls_RelatedPartyLoan" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant"/>
  <xsd:element name="FinanceLeaseAgreements" id="mtls_FinanceLeaseAgreements" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant"/>
  <xsd:element name="BankInvestmentLoansTop20Outstanding" id="mtls_BankInvestmentLoansTop20Outstanding" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant"/>
  <xsd:element name="KEUR8750OtherFacilityLoan" id="mtls_KEUR8750OtherFacilityLoan" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant"/>
  <xsd:element name="KEUR11250BankLoanAcTech" id="mtls_KEUR11250BankLoanAcTech" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant"/>
  <xsd:element name="ContingentConsiderationFromBusinessCombination" id="mtls_ContingentConsiderationFromBusinessCombination" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant"/>
  <xsd:element name="adjustmentContingentConsideration2018" id="mtls_adjustmentContingentConsideration2018" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant"/>
  <xsd:element name="cashSettledShareBasedPayments" id="mtls_cashSettledShareBasedPayments" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant"/>
  <xsd:element name="ContingentConsiderationFromBusinessCombinationClassifiedAsNonCurrent" id="mtls_ContingentConsiderationFromBusinessCombinationClassifiedAsNonCurrent" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant"/>
  <xsd:element name="FairValueContingentConsiderationConsiderationAsPerFinalAccountingDate" id="mtls_FairValueContingentConsiderationConsiderationAsPerFinalAccountingDate" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant"/>
  <xsd:element name="ContingentConsiderationFromBusinessCombinationsClassifiedAsCurrent" id="mtls_ContingentConsiderationFromBusinessCombinationsClassifiedAsCurrent" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant"/>
  <xsd:element name="ContingentConsiderationFromBusines" id="mtls_ContingentConsiderationFromBusines" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant"/>
  <xsd:element name="NonIncomeTaxPayablesClassifiedAsCurrent" id="mtls_NonIncomeTaxPayablesClassifiedAsCurrent" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant"/>
  <xsd:element name="KeurTwentyeightthousandAcquisitionLoanNotionalPercent" id="mtls_KeurTwentyeightthousandAcquisitionLoanNotionalPercent" type="num:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant"/>
  <xsd:element name="DecreaseIncreaseOfFutureHardwareRevenuePercent" id="mtls_DecreaseIncreaseOfFutureHardwareRevenuePercent" type="num:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant"/>
  <xsd:element name="IncreaseOfFutureHardwareRevenuePercent" id="mtls_IncreaseOfFutureHardwareRevenuePercent" type="num:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant"/>
  <xsd:element name="KeurEighteenthousandSecuredBankLoanConstructionBelgiumPolandAverageInterestPercent" id="mtls_KeurEighteenthousandSecuredBankLoanConstructionBelgiumPolandAverageInterestPercent" type="num:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant"/>
  <xsd:element name="DecreaseIncreaseOfFutureHardwareRevenueImpact" id="mtls_DecreaseIncreaseOfFutureHardwareRevenueImpact" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration"/>
  <xsd:element name="IncreaseOfFutureHardwareRevenueImpact" id="mtls_IncreaseOfFutureHardwareRevenueImpact" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration"/>
  <xsd:element name="HigherLoweProductionCostsImpact" id="mtls_HigherLoweProductionCostsImpact" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration"/>
  <xsd:element name="LowerProductionCostsImpact" id="mtls_LowerProductionCostsImpact" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration"/>
  <xsd:element name="HigherLoweProductionCostsPercent" id="mtls_HigherLoweProductionCostsPercent" type="num:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant"/>
  <xsd:element name="LowerProductionCostsPercent" id="mtls_LowerProductionCostsPercent" type="num:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant"/>
  <xsd:element name="DisclosureOfRevenueByCategoryAbstract" id="mtls_DisclosureOfRevenueByCategoryAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="DisclosureOfRevenueByCategoryTable" id="mtls_DisclosureOfRevenueByCategoryTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="LiquidityRiskNarrativeTable" id="mtls_LiquidityRiskNarrativeTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="CurrentIncomeTaxesTable" id="mtls_CurrentIncomeTaxesTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="ConsolidatedStatementOfFinancialPositionTable" id="mtls_ConsolidatedStatementOfFinancialPositionTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="DisclosureOfRevenueByCategoryLineItems" id="mtls_DisclosureOfRevenueByCategoryLineItems" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="ConsolidatedStatementOfFinancialPositionLineItemsAbstract" id="mtls_ConsolidatedStatementOfFinancialPositionLineItemsAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="CurrentIncomeTaxesAbstract" id="mtls_CurrentIncomeTaxesAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="DisclosureOfFairValueFinancialAssetsLineItems" id="mtls_DisclosureOfFairValueFinancialAssetsLineItems" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="equityInstrumentsDesignatedAtFairValueThroughOCIAbstract" id="mtls_equityInstrumentsDesignatedAtFairValueThroughOCIAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="debtInstrumentsMeasuredAtAmortizedCostAbstract" id="mtls_debtInstrumentsMeasuredAtAmortizedCostAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="financialLiabilitiesMeasuredAtAmortizedCostAbstract" id="mtls_financialLiabilitiesMeasuredAtAmortizedCostAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="financialLiabilitiesMeasuredAtFairValueAbstract" id="mtls_financialLiabilitiesMeasuredAtFairValueAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="DisclosureOfFairValueFinancialLiabilitiesLineItems" id="mtls_DisclosureOfFairValueFinancialLiabilitiesLineItems" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="DisclosureOfDetailsGrantsMaterialiseLineItems" id="mtls_DisclosureOfDetailsGrantsMaterialiseLineItems" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="DisclosureOfRapdriftDetailsGrantsLineItems" id="mtls_DisclosureOfRapdriftDetailsGrantsLineItems" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="NumberOfWarrantsGranted" id="mtls_NumberOfWarrantsGranted" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant"/>
  <xsd:element name="DisclosureOfShareBasedPaymentPlanLineItems" id="mtls_DisclosureOfShareBasedPaymentPlanLineItems" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="DisclosureOfShareBasedPaymentPlanAbstract" id="mtls_DisclosureOfShareBasedPaymentPlanAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="DisclosureOfDetailsGrantsMaterialiseAbstract" id="mtls_DisclosureOfDetailsGrantsMaterialiseAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="DisclosureOfDetailsShareBasedPaymentArrangementsMaterialseLineItems" id="mtls_DisclosureOfDetailsShareBasedPaymentArrangementsMaterialseLineItems" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="DisclosureOfDetailsGrantsMaterialiseCashSettledLineItems" id="mtls_DisclosureOfDetailsGrantsMaterialiseCashSettledLineItems" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="DisclosureOfDetailsShareBasedPaymentArrangementsMaterialseAbstract" id="mtls_DisclosureOfDetailsShareBasedPaymentArrangementsMaterialseAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="OtherNonCurrentLiabilitiesAbstract" id="mtls_OtherNonCurrentLiabilitiesAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="CategoriesAxis" id="mtls_CategoriesAxis" type="xbrli:stringItemType" substitutionGroup="xbrldt:dimensionItem" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="FairValueCategoryAxis" id="mtls_FairValueCategoryAxis" type="xbrli:stringItemType" substitutionGroup="xbrldt:dimensionItem" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="ShareBasedPaymentPlanCategoryAxis" id="mtls_ShareBasedPaymentPlanCategoryAxis" type="xbrli:stringItemType" substitutionGroup="xbrldt:dimensionItem" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="PaymentAssumptionsCategoryAxis" id="mtls_PaymentAssumptionsCategoryAxis" type="xbrli:stringItemType" substitutionGroup="xbrldt:dimensionItem" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="BasedPaymentPlanAxis" id="mtls_BasedPaymentPlanAxis" type="xbrli:stringItemType" substitutionGroup="xbrldt:dimensionItem" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="AllCategoriesMember" id="mtls_AllCategoriesMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="AllWarrantsPlansMember" id="mtls_AllWarrantsPlansMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="AllPlansMaterialiseMember" id="mtls_AllPlansMaterialiseMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="TwothousandsevenToTwothousandthirteenWarrantsPlansMember" id="mtls_TwothousandsevenToTwothousandthirteenWarrantsPlansMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="IpoPlanMember" id="mtls_IpoPlanMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="IpoCashSettledPlansMember" id="mtls_IpoCashSettledPlansMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="TwothousandfifteenWarrantsPlanMember" id="mtls_TwothousandfifteenWarrantsPlanMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="RapdriftPlansMember" id="mtls_RapdriftPlansMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="CategoriesMember" id="mtls_CategoriesMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="SoftwareNonMedicalMember" id="mtls_SoftwareNonMedicalMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="SoftwareMedicalMember" id="mtls_SoftwareMedicalMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="MedicalDevicesAndServicesMember" id="mtls_MedicalDevicesAndServicesMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="PrototypingMember" id="mtls_PrototypingMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="EndPartsProductionMember" id="mtls_EndPartsProductionMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="ComplexMetalPartsProductionAcTechMember" id="mtls_ComplexMetalPartsProductionAcTechMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="OtherCategoryMember" id="mtls_OtherCategoryMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="AllFairValueCategoriesMember" id="mtls_AllFairValueCategoriesMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="AllPaymentAssumptionsMember" id="mtls_AllPaymentAssumptionsMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="PlanTothousandfifteenShareBasedPaymentAssumptionsMember" id="mtls_PlanTothousandfifteenShareBasedPaymentAssumptionsMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="IpoTwothousandfifteenShareBasedPaymentAssumptionsMember" id="mtls_IpoTwothousandfifteenShareBasedPaymentAssumptionsMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="IpoTwothousandfpurteenNovShareBasedPaymentAssumptionsMember" id="mtls_IpoTwothousandfpurteenNovShareBasedPaymentAssumptionsMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="IpoTwothousandfourteenJuneShareBasedPaymentAssumptionsMember" id="mtls_IpoTwothousandfourteenJuneShareBasedPaymentAssumptionsMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="TwothousandthirteenDecShareBasedPaymentAssumptionsMember" id="mtls_TwothousandthirteenDecShareBasedPaymentAssumptionsMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="TwothousandthirteenOctShareBasedPaymentAssumptionsMember" id="mtls_TwothousandthirteenOctShareBasedPaymentAssumptionsMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="TwothousandsevenShareBasedPaymentAssumptionsMember" id="mtls_TwothousandsevenShareBasedPaymentAssumptionsMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="SarMember" id="mtls_SarMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="MobelifeMember" id="mtls_MobelifeMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="MobelifePlanTwothousandtwelveMember" id="mtls_MobelifePlanTwothousandtwelveMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="AllPaymentPlansMember" id="mtls_AllPaymentPlansMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="MaterialiseCashSettledShareBasedPaymentPlanMember" id="mtls_MaterialiseCashSettledShareBasedPaymentPlanMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="DisclosureOfFairValueFinancialAssetsTable" id="mtls_DisclosureOfFairValueFinancialAssetsTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="OtherNonCurrentLiabilitiesTable" id="mtls_OtherNonCurrentLiabilitiesTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="DisclosureOfFairValueFinancialLiabilitiesTable" id="mtls_DisclosureOfFairValueFinancialLiabilitiesTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="DisclosureOfShareBasedPaymentPlanTable" id="mtls_DisclosureOfShareBasedPaymentPlanTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="DisclosureOfDetailsGrantsMaterialiseCashSettledTable" id="mtls_DisclosureOfDetailsGrantsMaterialiseCashSettledTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="DisclosureOfDetailsGrantsMaterialiseTable" id="mtls_DisclosureOfDetailsGrantsMaterialiseTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="DisclosureOfRapdriftDetailsGrantsTable" id="mtls_DisclosureOfRapdriftDetailsGrantsTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="DisclosureOfDetailsShareBasedPaymentArrangementsMaterialiseTable" id="mtls_DisclosureOfDetailsShareBasedPaymentArrangementsMaterialiseTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="DetailMovementTable" id="mtls_DetailMovementTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="TradeReceivablesTable" id="mtls_TradeReceivablesTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="ContractBalancesTable" id="mtls_ContractBalancesTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="CashAndCashEquivalentsTable" id="mtls_CashAndCashEquivalentsTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="OtherReservesTable" id="mtls_OtherReservesTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="RelationshipTaxExpenseAndAcountringProfitTable" id="mtls_RelationshipTaxExpenseAndAcountringProfitTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="FinancialIncomeTable" id="mtls_FinancialIncomeTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="DisclosureOfTermsAndConditionsOfShareBasedPaymentPlanArrangementsOfTheTwothousandthirteenWarrantPlanTextBlock" id="mtls_DisclosureOfTermsAndConditionsOfShareBasedPaymentPlanArrangementsOfTheTwothousandthirteenWarrantPlanTextBlock" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="NumberOfSharesOptionsForfeitedCancelledInShareBasedPaymentArrangements" id="mtls_NumberOfSharesOptionsForfeitedCancelledInShareBasedPaymentArrangements" type="xbrli:decimalItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="ContractualTermShareOptions" id="mtls_ContractualTermShareOptions" type="xbrli:decimalItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="NumberOfInstrumentsGrantedInSharebasedPaymentArrangementOne" id="mtls_NumberOfInstrumentsGrantedInSharebasedPaymentArrangementOne" type="xbrli:decimalItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="NumberOfInstrumentsGrantedInSharebasedPaymentArrangementTwo" id="mtls_NumberOfInstrumentsGrantedInSharebasedPaymentArrangementTwo" type="xbrli:decimalItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="NumberOfInstrumentsGrantedInSharebasedPaymentArrangementThree" id="mtls_NumberOfInstrumentsGrantedInSharebasedPaymentArrangementThree" type="xbrli:decimalItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="WeightedAverageRemainingEstimatedLifeShareOptions" id="mtls_WeightedAverageRemainingEstimatedLifeShareOptions" type="xbrli:decimalItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="WeightedAverageFairValueOfWarrantsOutstanding" id="mtls_WeightedAverageFairValueOfWarrantsOutstanding" type="num:perShareItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="KeurTwentyeightthousandAcquisitionPeriodForMonthlyReimbursablePortion" id="mtls_KeurTwentyeightthousandAcquisitionPeriodForMonthlyReimbursablePortion" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="KeurEightthousandsevenhundredfiftyItherFacilityLoanGrossRepaymentSchedule" id="mtls_KeurEightthousandsevenhundredfiftyItherFacilityLoanGrossRepaymentSchedule" type="xbrli:decimalItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="ConvertibleLoanContractualLife" id="mtls_ConvertibleLoanContractualLife" type="xbrli:decimalItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="BankInvestmentLoansReimbursementPeriod" id="mtls_BankInvestmentLoansReimbursementPeriod" type="xbrli:decimalItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="ConvertibleLoanConversionPrice" id="mtls_ConvertibleLoanConversionPrice" type="xbrli:decimalItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="InstitutionalLoanReimbursementPeriod" id="mtls_InstitutionalLoanReimbursementPeriod" type="xbrli:decimalItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="FinanceLeaseRelatedPartyLeaseTerm" id="mtls_FinanceLeaseRelatedPartyLeaseTerm" type="xbrli:decimalItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="FinanceLeaseRelatedPartyInterestExpense" id="mtls_FinanceLeaseRelatedPartyInterestExpense" type="xbrli:decimalItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="BankInvestmentLoansWeightedAverageInterestPercent" id="mtls_BankInvestmentLoansWeightedAverageInterestPercent" type="num:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant"/>
  <xsd:element name="FairValueSharesOptionsGranted" id="mtls_FairValueSharesOptionsGranted" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="RangeOfExercisePricesTopOfRange" id="mtls_RangeOfExercisePricesTopOfRange" type="num:perShareItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant"/>
  <xsd:element name="RangeOfExercisePricesBottomOfRange" id="mtls_RangeOfExercisePricesBottomOfRange" type="num:perShareItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant"/>
  <xsd:element name="CashSettledLiabilityShareOptionsGranted" id="mtls_CashSettledLiabilityShareOptionsGranted" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant"/>
  <xsd:element name="MaximumNumberOfWarrants" id="mtls_MaximumNumberOfWarrants" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant"/>
  <xsd:element name="NumberOfWarrantsOutstandingAfterStockSplit" id="mtls_NumberOfWarrantsOutstandingAfterStockSplit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="instant"/>
  <xsd:element name="IntrinsicValueCashSettledWarrants" id="mtls_IntrinsicValueCashSettledWarrants" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant"/>
  <xsd:element name="ConsolidatedReservesMember" id="mtls_ConsolidatedReservesMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="DisclosureOfTaxPayablesAbstract" id="mtls_DisclosureOfTaxPayablesAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="TradeReceivablesLineItemsAbstract" id="mtls_TradeReceivablesLineItemsAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="ContractBalancesLineItemsAbstract" id="mtls_ContractBalancesLineItemsAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="TaxEffectOfAdjustmentsForCurrentTaxOfPriorPeriods" id="mtls_TaxEffectOfAdjustmentsForCurrentTaxOfPriorPeriods" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration"/>
  <xsd:element name="TaxEffectOfRevenuesExemptFromTaxation" id="mtls_TaxEffectOfRevenuesExemptFromTaxation" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration"/>
  <xsd:element name="WeightedAverageExercisePriceOfShareOptionsExercisedOrVestedInShareBasedPaymentArrangement" id="mtls_WeightedAverageExercisePriceOfShareOptionsExercisedOrVestedInShareBasedPaymentArrangement" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="StatementOfCashFlowTable" id="mtls_StatementOfCashFlowTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="DetailRelatedPartyTransactionsNarrativeTable" id="mtls_DetailRelatedPartyTransactionsNarrativeTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="ConsolidatedIncomeStatementsTable" id="mtls_ConsolidatedIncomeStatementsTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="EarningsPerShareAttributableToOrdinaryOwnersOfTheParentTable" id="mtls_EarningsPerShareAttributableToOrdinaryOwnersOfTheParentTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="IFRS15ConsolidatedIncomeStatementsTable" id="mtls_IFRS15ConsolidatedIncomeStatementsTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="IFRS15BalanceSheetTable" id="mtls_IFRS15BalanceSheetTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="ActechRestatementBalanceSheetTable" id="mtls_ActechRestatementBalanceSheetTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="ActechRestatementIncomeStatementTable" id="mtls_ActechRestatementIncomeStatementTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="OtherReservesLineItemsAbstract" id="mtls_OtherReservesLineItemsAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="DetailsRelatedPartyTransactionsNarrativeLineItems" id="mtls_DetailsRelatedPartyTransactionsNarrativeLineItems" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="ConsolidatedCashFlowStatementsLineItems" id="mtls_ConsolidatedCashFlowStatementsLineItems" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="CashAndCashEquivalentsLineItemsAbstract" id="mtls_CashAndCashEquivalentsLineItemsAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="EarningsPerShareAttributableToOrdinaryOwnersOfTheParentLineItems" id="mtls_EarningsPerShareAttributableToOrdinaryOwnersOfTheParentLineItems" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="DetailMovementAbstract" id="mtls_DetailMovementAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="FinancialIncomeLineItemsAbstract" id="mtls_FinancialIncomeLineItemsAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="RelationshipTaxExpenseAndAccountingProfitLineItemsAbstract" id="mtls_RelationshipTaxExpenseAndAccountingProfitLineItemsAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="ConsolidatedIncomeStatementsLineItems" id="mtls_ConsolidatedIncomeStatementsLineItems" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="ConsolidatedCashFlowStatementsAxis" id="mtls_ConsolidatedCashFlowStatementsAxis" type="xbrli:stringItemType" substitutionGroup="xbrldt:dimensionItem" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="GoodwillTable" id="mtls_GoodwillTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="CurrentTaxLiabilityACTech" id="mtls_CurrentTaxLiabilityACTech" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant"/>
  <xsd:element name="MiscellaneousNonCurrentLiabilitiesTable" id="mtls_MiscellaneousNonCurrentLiabilitiesTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="MiscellaneousNonCurrentLiabilitiesNarrativeTable" id="mtls_MiscellaneousNonCurrentLiabilitiesNarrativeTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="MiscellaneousNonCurrentLiabilitiesAxis" id="mtls_MiscellaneousNonCurrentLiabilitiesAxis" type="xbrli:stringItemType" substitutionGroup="xbrldt:dimensionItem" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="MiscellaneousCurrentAssetsAxis" id="mtls_MiscellaneousCurrentAssetsAxis" type="xbrli:stringItemType" substitutionGroup="xbrldt:dimensionItem" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="MiscellaneousNonCurrentAssetsAxis" id="mtls_MiscellaneousNonCurrentAssetsAxis" type="xbrli:stringItemType" substitutionGroup="xbrldt:dimensionItem" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="SegmentsNarrativeAxis" id="mtls_SegmentsNarrativeAxis" type="xbrli:stringItemType" substitutionGroup="xbrldt:dimensionItem" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="MiscellaneousNonCurrentLiabilitiesMember" id="mtls_MiscellaneousNonCurrentLiabilitiesMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="MiscellaneousCurrentAssetsMember" id="mtls_MiscellaneousCurrentAssetsMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="MiscellaneousNonCurrentAssetsMember" id="mtls_MiscellaneousNonCurrentAssetsMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="MiscellaneousNonCurrentLiabilitiesLineItems" id="mtls_MiscellaneousNonCurrentLiabilitiesLineItems" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="MiscellaneousNonCurrentLiabilitiesNarrativeLineItems" id="mtls_MiscellaneousNonCurrentLiabilitiesNarrativeLineItems" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="IncomeTaxAndDeferredTaxAbstract" id="mtls_IncomeTaxAndDeferredTaxAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="DisclosureOfIncomeTaxAndDeferredTaxExplanatory" id="mtls_DisclosureOfIncomeTaxAndDeferredTaxExplanatory" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="CapitalIncreaseViaExerciseWarrants" id="mtls_CapitalIncreaseViaExerciseWarrants" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant"/>
  <xsd:element name="NonControllingInterestAbstract" id="mtls_NonControllingInterestAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="NonControllingInterestHeldInRapidFitPlus" id="mtls_NonControllingInterestHeldInRapidFitPlus" type="num:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant"/>
  <xsd:element name="ReserveTable" id="mtls_ReserveTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="ReservesTableAxis" id="mtls_ReservesTableAxis" type="xbrli:stringItemType" substitutionGroup="xbrldt:dimensionItem" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="ReservesTableLineItems" id="mtls_ReservesTableLineItems" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="WrittenPutOptionRapidFitPlus" id="mtls_WrittenPutOptionRapidFitPlus" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant"/>
  <xsd:element name="WrittenPutOptionPayableRapidfitCurrent" id="mtls_WrittenPutOptionPayableRapidfitCurrent" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant"/>
  <xsd:element name="WrittenPutOptionRapidFitPlusUnDiscountedEstimatedRedemptionAmount" id="mtls_WrittenPutOptionRapidFitPlusUnDiscountedEstimatedRedemptionAmount" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant"/>
  <xsd:element name="WrittenPutOptionRapidFitPlusInitialReclassificationFromNonControllingInterest" id="mtls_WrittenPutOptionRapidFitPlusInitialReclassificationFromNonControllingInterest" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant"/>
  <xsd:element name="WrittenPutOptionRapidFitPlusIniitialReclassificationFromConsolidatedReserves" id="mtls_WrittenPutOptionRapidFitPlusIniitialReclassificationFromConsolidatedReserves" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant"/>
  <xsd:element name="WrittenPutOptionRapidFitPlusIncreaseDecreaseWrittenPutOption" id="mtls_WrittenPutOptionRapidFitPlusIncreaseDecreaseWrittenPutOption" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant"/>
  <xsd:element name="IssuedDilutionWarrantstoNonControllingINterest" id="mtls_IssuedDilutionWarrantstoNonControllingINterest" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="averagePricePerShareCapitalIncreaseViaExerciseOfWarrants" id="mtls_averagePricePerShareCapitalIncreaseViaExerciseOfWarrants" type="num:perShareItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="averagePricePerShareCapitalIncreaseInCashPublicOffering" id="mtls_averagePricePerShareCapitalIncreaseInCashPublicOffering" type="num:perShareItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="IssuedDilutionWarrantsFairValue" id="mtls_IssuedDilutionWarrantsFairValue" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant"/>
  <xsd:element name="ConsolidatedSegmentsMember" id="mtls_ConsolidatedSegmentsMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="EibFinanceContractCreditLineTotal" id="mtls_EibFinanceContractCreditLineTotal" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant"/>
  <xsd:element name="DeferredTaxLiabilitiesOnOtherItems" id="mtls_DeferredTaxLiabilitiesOnOtherItems" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant"/>
  <xsd:element name="OutstandingSharesMonetary" id="mtls_OutstandingSharesMonetary" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant"/>
  <xsd:element name="DisclosureOfOtherNoncurrentAssetsTextBlockExplanatory" id="mtls_DisclosureOfOtherNoncurrentAssetsTextBlockExplanatory" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="TaxPayablesAbstract" id="mtls_TaxPayablesAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="DisclosureOfOtherCurrentAssetsTextBlockExplanatory" id="mtls_DisclosureOfOtherCurrentAssetsTextBlockExplanatory" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="LoansAndBorrowingsTable" id="mtls_LoansAndBorrowingsTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="LoansAndBorrowingsLineItems" id="mtls_LoansAndBorrowingsLineItems" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="LoansAndBorrowingsAxis" id="mtls_LoansAndBorrowingsAxis" type="xbrli:stringItemType" substitutionGroup="xbrldt:dimensionItem" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="SegmentReconciliationAxis" id="mtls_SegmentReconciliationAxis" type="xbrli:stringItemType" substitutionGroup="xbrldt:dimensionItem" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="LoansAndBorrowingsMember" id="mtls_LoansAndBorrowingsMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="OtherCurrentLiabilitiesNarrativeTable" id="mtls_OtherCurrentLiabilitiesNarrativeTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="OtherCurrentLiabilitiesNarrativeAxis" id="mtls_OtherCurrentLiabilitiesNarrativeAxis" type="xbrli:stringItemType" substitutionGroup="xbrldt:dimensionItem" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="OtherCurrentLiabilitiesNarrativeLineItems" id="mtls_OtherCurrentLiabilitiesNarrativeLineItems" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="OtherCurrentLiabilitiesNarrativeMember" id="mtls_OtherCurrentLiabilitiesNarrativeMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="StatemenzOfComprehensiveIncomeTable" id="mtls_StatemenzOfComprehensiveIncomeTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="StatemenzOfComprehensiveIncomeLineItems" id="mtls_StatemenzOfComprehensiveIncomeLineItems" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="PayrollExpensesTable" id="mtls_PayrollExpensesTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="PayrollExpensesAxis" id="mtls_PayrollExpensesAxis" type="xbrli:stringItemType" substitutionGroup="xbrldt:dimensionItem" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="PayrollExpensesMember" id="mtls_PayrollExpensesMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="PayrollExpensesLineItems" id="mtls_PayrollExpensesLineItems" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="MiscellaneousNonCurrentAssetsLineItems" id="mtls_MiscellaneousNonCurrentAssetsLineItems" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="OtherNonCurrentAssetsLineItems" id="mtls_OtherNonCurrentAssetsLineItems" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="TimingOfTransferOfGoods" id="mtls_TimingOfTransferOfGoods" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="UnitedStatesOfAmericaUSA" id="mtls_UnitedStatesOfAmericaUSA" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant"/>
  <xsd:element name="AmericasOtherThanUsa" id="mtls_AmericasOtherThanUsa" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant"/>
  <xsd:element name="EuropeWithoutBelgiumAndAfrica" id="mtls_EuropeWithoutBelgiumAndAfrica" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant"/>
  <xsd:element name="Belgium" id="mtls_Belgium" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant"/>
  <xsd:element name="AsiaPacific" id="mtls_AsiaPacific" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant"/>
  <xsd:element name="SoftwareRevenueNonMedical" id="mtls_SoftwareRevenueNonMedical" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant"/>
  <xsd:element name="SoftwareRevenueMedical" id="mtls_SoftwareRevenueMedical" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant"/>
  <xsd:element name="MedicalDevicesAndServices" id="mtls_MedicalDevicesAndServices" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant"/>
  <xsd:element name="Prototyping" id="mtls_Prototyping" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant"/>
  <xsd:element name="EndPartsProduction" id="mtls_EndPartsProduction" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant"/>
  <xsd:element name="ComplexMetalPartsProductionActech" id="mtls_ComplexMetalPartsProductionActech" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant"/>
  <xsd:element name="Other" id="mtls_Other" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant"/>
  <xsd:element name="GoodsServicesTransferredAtAPointInTime" id="mtls_GoodsServicesTransferredAtAPointInTime" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant"/>
  <xsd:element name="GoodsServicesTransferredOverTime" id="mtls_GoodsServicesTransferredOverTime" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant"/>
</xsd:schema>
