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  <xs:element id="mtrx_ValuationAllowanceOfDeferredTaxAssetsShareBasedPaymentAwardsCompensationRemainingBalance" abstract="false" name="ValuationAllowanceOfDeferredTaxAssetsShareBasedPaymentAwardsCompensationRemainingBalance" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="mtrx_LettersOfCreditIssued" abstract="false" name="LettersOfCreditIssued" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="mtrx_AcquisitionRelatedAdjustmentForFinalWorkingCapitalSettlement" abstract="false" name="AcquisitionRelatedAdjustmentForFinalWorkingCapitalSettlement" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="mtrx_MtrxStorageAndTerminalSolutions" abstract="false" name="MtrxStorageAndTerminalSolutions" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="mtrx_MtrxFixedChargeCoverageRatioMinimum" abstract="false" name="MtrxFixedChargeCoverageRatioMinimum" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="mtrx_IBEWLocalFourFiveSixPensionPlanMemberDomain" abstract="true" name="IBEWLocalFourFiveSixPensionPlanMemberDomain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="mtrx_RevenueAbstract" abstract="true" name="RevenueAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="mtrx_CanadianPrimeRateMember" abstract="true" name="CanadianPrimeRateMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="mtrx_IndustrialMember" abstract="true" name="IndustrialMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="mtrx_MtrxLineofCreditFacilityMaximumUnusedCapacityFeePercentage" abstract="false" name="MtrxLineofCreditFacilityMaximumUnusedCapacityFeePercentage" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="mtrx_ShareBasedCompensationArrangementByShareBasedPaymentAwardInstallmentPeriodForVesting" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardInstallmentPeriodForVesting" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="mtrx_Vestin2016Member" abstract="true" name="Vestin2016Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="mtrx_Reversalofbranchliability" abstract="false" name="Reversalofbranchliability" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="mtrx_LineOfCreditBasisSpreadOnAdjustedLIBOAndCDORMaximum" abstract="false" name="LineOfCreditBasisSpreadOnAdjustedLIBOAndCDORMaximum" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="mtrx_LineOfCreditBasisSpreadOnCanadianPrimeRateMaximum" abstract="false" name="LineOfCreditBasisSpreadOnCanadianPrimeRateMaximum" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="mtrx_MtrxLineOfCreditBasisSpreadOnCanadianPrimeRateMinimum" abstract="false" name="MtrxLineOfCreditBasisSpreadOnCanadianPrimeRateMinimum" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="mtrx_PerformanceSharesEarnedInExcessOfTargetAmount" abstract="false" name="PerformanceSharesEarnedInExcessOfTargetAmount" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="mtrx_Vestin2018Member" abstract="true" name="Vestin2018Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="mtrx_LineOfCreditFacilityMaximumBorrowingCapacityAfterConsiderationOfCapacityConstraint" abstract="false" name="LineOfCreditFacilityMaximumBorrowingCapacityAfterConsiderationOfCapacityConstraint" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="mtrx_ValuationAllowanceOfDeferredTaxAssetsForeignCurrencyTranslationDeduction" abstract="false" name="ValuationAllowanceOfDeferredTaxAssetsForeignCurrencyTranslationDeduction" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="mtrx_ScheduleOfIntangibleAssetsExcludingGoodwillTableTableTextBlock" abstract="false" name="ScheduleOfIntangibleAssetsExcludingGoodwillTableTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
  <xs:element id="mtrx_BusinessAcquisitionProFormaIncomefromTaxSettlement" abstract="false" name="BusinessAcquisitionProFormaIncomefromTaxSettlement" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="mtrx_SMElectricTradeNameMember" abstract="true" name="SMElectricTradeNameMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="mtrx_Sublimitonlettersofcreditunderthecreditfacility" abstract="false" name="Sublimitonlettersofcreditunderthecreditfacility" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="mtrx_RetentionPayablePolicyTextBlock" abstract="false" name="RetentionPayablePolicyTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
  <xs:element id="mtrx_LineOfCreditBasisSpreadOnCanadianPrimeRateMinimum" abstract="false" name="LineOfCreditBasisSpreadOnCanadianPrimeRateMinimum" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="mtrx_SublimitonAustralianDollarCanadianDollarEuroandPoundsSterling" abstract="false" name="SublimitonAustralianDollarCanadianDollarEuroandPoundsSterling" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="mtrx_OtherLeaseInformationAbstract" abstract="true" name="OtherLeaseInformationAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="mtrx_ScheduleOfComponentsOfDeferredTaxAssetsAndLiabilitiesNetTableTextBlock" abstract="false" name="ScheduleOfComponentsOfDeferredTaxAssetsAndLiabilitiesNetTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
  <xs:element id="mtrx_PayoutAsPercentageOfOriginalAwardMinimum" abstract="false" name="PayoutAsPercentageOfOriginalAwardMinimum" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="mtrx_IronworkersMidAmericaPensionPlanMember" abstract="true" name="IronworkersMidAmericaPensionPlanMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="mtrx_MatrixServiceCompany2016StockandIncentiveCompensationPlanMember" abstract="true" name="MatrixServiceCompany2016StockandIncentiveCompensationPlanMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="mtrx_CustomerElevenMember" abstract="true" name="CustomerElevenMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="mtrx_BusinessAcquisitionProFormaDepreciationExpense" abstract="false" name="BusinessAcquisitionProFormaDepreciationExpense" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="mtrx_ElectricalInfrastructureMember" abstract="true" name="ElectricalInfrastructureMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="mtrx_OhioCarpentersPensionFundLocal1090and351Member" abstract="true" name="OhioCarpentersPensionFundLocal1090and351Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="mtrx_StatetaxcreditMember" abstract="true" name="StatetaxcreditMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="mtrx_IncomeTaxReconciliationChargesWithoutTaxBenefit" abstract="false" name="IncomeTaxReconciliationChargesWithoutTaxBenefit" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="mtrx_PayoutAsPercentageOfOriginalAwardMaximum" abstract="false" name="PayoutAsPercentageOfOriginalAwardMaximum" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="mtrx_Mtrx_ControllingInterestOfJointVentureValue" abstract="false" name="Mtrx_ControllingInterestOfJointVentureValue" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="mtrx_CustomerThirteenMember" abstract="true" name="CustomerThirteenMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="mtrx_CARESActTotalBenefit" abstract="false" name="CARESActTotalBenefit" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="mtrx_VestIn2021Member" abstract="true" name="VestIn2021Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="mtrx_CARESActInterestExpenseDeductionUpperLimit" abstract="false" name="CARESActInterestExpenseDeductionUpperLimit" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="mtrx_IronWorkersPensionPlanofWesternPennsylvaniaLocal3Member" abstract="true" name="IronWorkersPensionPlanofWesternPennsylvaniaLocal3Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="mtrx_CustomerRelationshipImpairment1Member" abstract="true" name="CustomerRelationshipImpairment1Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="mtrx_CustomerEightMember" abstract="true" name="CustomerEightMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="mtrx_MultiemployerPlanZoneByTypeAxis" abstract="true" name="MultiemployerPlanZoneByTypeAxis" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType"/>
  <xs:element id="mtrx_DeferredTaxAssetsInsuranceReserve" abstract="false" name="DeferredTaxAssetsInsuranceReserve" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="mtrx_CustomerNineMember" abstract="true" name="CustomerNineMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="mtrx_ContractWithCustomerCurrentLiabilityNet" abstract="false" name="ContractWithCustomerCurrentLiabilityNet" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="mtrx_FederalTaxCreditCarryforwardsMember" abstract="true" name="FederalTaxCreditCarryforwardsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="mtrx_CustomerBasedMember" abstract="true" name="CustomerBasedMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="mtrx_FederaltaxcreditcarryforwardMember" abstract="true" name="FederaltaxcreditcarryforwardMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="mtrx_IncomeTaxAuthorityDescriptionDomain" abstract="true" name="IncomeTaxAuthorityDescriptionDomain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="mtrx_EmployeeStockPurchasePlanTerminationDate" abstract="false" name="EmployeeStockPurchasePlanTerminationDate" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:dateItemType"/>
  <xs:element id="mtrx_AdjustmentToRestructuringReserve" abstract="false" name="AdjustmentToRestructuringReserve" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="mtrx_DeferredSharesIssued" abstract="false" name="DeferredSharesIssued" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="mtrx_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriodOfDirectorAwards" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriodOfDirectorAwards" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="mtrx_MtrxLineOfCreditBasisSpreadOnAlternateBaseRateMinimum" abstract="false" name="MtrxLineOfCreditBasisSpreadOnAlternateBaseRateMinimum" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="mtrx_CustomerOneMember" abstract="true" name="CustomerOneMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="mtrx_ShareBasedCompensationArrangementByShareBasedPaymentAwardDeferredGrantsInPeriod" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardDeferredGrantsInPeriod" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="mtrx_CustomerTwoMember" abstract="true" name="CustomerTwoMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="mtrx_NorthwesternOhioPlumbersAndPipeFittersLocal50Member" abstract="true" name="NorthwesternOhioPlumbersAndPipeFittersLocal50Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="mtrx_MtrxSeniorLeverageRatioMaximum" abstract="false" name="MtrxSeniorLeverageRatioMaximum" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="mtrx_UtilityAndPowerInfrastructureSegmentMember" abstract="true" name="UtilityAndPowerInfrastructureSegmentMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="mtrx_DebtTextualAbstract" abstract="true" name="DebtTextualAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="mtrx_NumberOfUnionsContributedTo" abstract="false" name="NumberOfUnionsContributedTo" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="mtrx_PlumbersandPipefittersLocalUnionSevenFourPensionFundMember" abstract="true" name="PlumbersandPipefittersLocalUnionSevenFourPensionFundMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="mtrx_ShareBasedCompensationArrangementByShareBasedPaymentAwardDeferredSharesVestedAndReleased" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardDeferredSharesVestedAndReleased" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="mtrx_IndianaLaborersPensionFundDomain" abstract="true" name="IndianaLaborersPensionFundDomain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="mtrx_IncomeTaxAuthorityDescriptionAxis" abstract="true" name="IncomeTaxAuthorityDescriptionAxis" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType"/>
  <xs:element id="mtrx_CanadaEmergencyWageSubsidyRelief" abstract="false" name="CanadaEmergencyWageSubsidyRelief" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="mtrx_MtrxLineOfCreditBasisSpreadOnAdjustedLIBOEURIBOandCDORMinimum" abstract="false" name="MtrxLineOfCreditBasisSpreadOnAdjustedLIBOEURIBOandCDORMinimum" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="mtrx_CustomerFiveMemberMember" abstract="true" name="CustomerFiveMemberMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="mtrx_CurrentYearOutstandingRestructuringCostsIncurred" abstract="false" name="CurrentYearOutstandingRestructuringCostsIncurred" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="mtrx_MtrxMtrxLineOfCreditFacilityMaximumBorrowingCapacityNewAgreementAmount" abstract="false" name="MtrxMtrxLineOfCreditFacilityMaximumBorrowingCapacityNewAgreementAmount" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="mtrx_ConsiderationtransferredTableTextBlock" abstract="false" name="ConsiderationtransferredTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
  <xs:element id="mtrx_DeferredIncomeTaxExpenseBenefitSocf" abstract="false" name="DeferredIncomeTaxExpenseBenefitSocf" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="mtrx_Effectofnewaccountingstandardcomparedtooldstandard" abstract="false" name="Effectofnewaccountingstandardcomparedtooldstandard" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="mtrx_Settlementofwarrantyreserve" abstract="false" name="Settlementofwarrantyreserve" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="mtrx_LineOfCreditBasisSpreadOnAdjustedLIBOAndCDORMinimum" abstract="false" name="LineOfCreditBasisSpreadOnAdjustedLIBOAndCDORMinimum" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="mtrx_PipefittersRetirementFundLocalFiveNineSevenMember" abstract="true" name="PipefittersRetirementFundLocalFiveNineSevenMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="mtrx_TransportationEquipmentGross" abstract="false" name="TransportationEquipmentGross" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="mtrx_CARESACTDeferredPayrollTaxLiability" abstract="false" name="CARESACTDeferredPayrollTaxLiability" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="mtrx_DefinedContributionPlanEmployerMatchingContributionPercentForTwoPercentOfEmployeeContribution" abstract="false" name="DefinedContributionPlanEmployerMatchingContributionPercentForTwoPercentOfEmployeeContribution" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="mtrx_DirectorAwardsMember" abstract="true" name="DirectorAwardsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="mtrx_Vestingperiodretirementeligibleemployees" abstract="false" name="Vestingperiodretirementeligibleemployees" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="mtrx_LocalThreeFiveOneIbewPensionPlanDomain" abstract="true" name="LocalThreeFiveOneIbewPensionPlanDomain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="mtrx_CustomerRelationshipImpairment2Member" abstract="true" name="CustomerRelationshipImpairment2Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="mtrx_PriorCreditAgreementHighestUnusedCreditFacilityFee" abstract="false" name="PriorCreditAgreementHighestUnusedCreditFacilityFee" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="mtrx_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueMethodNumberofSimulationsUsed" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueMethodNumberofSimulationsUsed" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="mtrx_CustomerThreeMember" abstract="true" name="CustomerThreeMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="mtrx_UnallocatedCorporateCostsMember" abstract="true" name="UnallocatedCorporateCostsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="mtrx_AntidilutiveSecuritiesExcludedFromComputationOfDilutedEarningsPerShareAbstract" abstract="true" name="AntidilutiveSecuritiesExcludedFromComputationOfDilutedEarningsPerShareAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="mtrx_MtrxLineOfCreditBasisSpreadOnCanadianPrimeRateMaximum" abstract="false" name="MtrxLineOfCreditBasisSpreadOnCanadianPrimeRateMaximum" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="mtrx_MatrixServiceCompanys2012StockandIncentiveCompensationPlanMember" abstract="true" name="MatrixServiceCompanys2012StockandIncentiveCompensationPlanMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="mtrx_ScheduleOfSegmentReportingInformationByGeographicAreasAbstract" abstract="true" name="ScheduleOfSegmentReportingInformationByGeographicAreasAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="mtrx_Grossrevenues" abstract="false" name="Grossrevenues" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="mtrx_AccountsReceivableReserveIncrease" abstract="false" name="AccountsReceivableReserveIncrease" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="mtrx_CARESActPayrollTaxCredits" abstract="false" name="CARESActPayrollTaxCredits" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="mtrx_MtrxLineOfCreditBasisSpreadOnAdjustedLIBOEURIBOandCDORMaximum" abstract="false" name="MtrxLineOfCreditBasisSpreadOnAdjustedLIBOEURIBOandCDORMaximum" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="mtrx_PriorCreditAgreementHighestMargin" abstract="false" name="PriorCreditAgreementHighestMargin" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="mtrx_CustomerSixMember" abstract="true" name="CustomerSixMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="mtrx_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardDescriptionofVestingPeriodofDirectorAwards" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardDescriptionofVestingPeriodofDirectorAwards" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="mtrx_MtrxAssetBackedCreditFacilityLIBORRateOneMonthAddOn" abstract="false" name="MtrxAssetBackedCreditFacilityLIBORRateOneMonthAddOn" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="mtrx_DisclosureCustomerContractsAdditionalInformationAbstract" abstract="true" name="DisclosureCustomerContractsAdditionalInformationAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="mtrx_ZoneGreenMember" abstract="true" name="ZoneGreenMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="mtrx_MtrxAssetBackedCreditFacility_FederalFundsRateAddition" abstract="false" name="MtrxAssetBackedCreditFacility_FederalFundsRateAddition" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="mtrx_MtrxLetterofCreditCollateralLowerLimitPercentage" abstract="false" name="MtrxLetterofCreditCollateralLowerLimitPercentage" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="mtrx_MtrxStorageandTerminalSolutionsSegment" abstract="false" name="MtrxStorageandTerminalSolutionsSegment" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="mtrx_ValuationAllowanceOfDeferredTaxAssetsFullyReservedTaxCredits" abstract="false" name="ValuationAllowanceOfDeferredTaxAssetsFullyReservedTaxCredits" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="mtrx_InsuranceReservesPolicyTextBlock" abstract="false" name="InsuranceReservesPolicyTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
  <xs:element id="mtrx_CapacityConstraintDueToSeniorLeverageRatio" abstract="false" name="CapacityConstraintDueToSeniorLeverageRatio" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="mtrx_OtherTreasurySharesAcquired" abstract="false" name="OtherTreasurySharesAcquired" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="mtrx_AmountOfLimitOnAssetDispositions" abstract="false" name="AmountOfLimitOnAssetDispositions" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="mtrx_DescriptionOfFundedPortionOfPlan" abstract="false" name="DescriptionOfFundedPortionOfPlan" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="mtrx_ZoneRedMember" abstract="true" name="ZoneRedMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="mtrx_ProcessHeatingEquipmentBusinessMember" abstract="true" name="ProcessHeatingEquipmentBusinessMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="mtrx_CustomerSevenMember" abstract="true" name="CustomerSevenMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="mtrx_Vestin2017Member" abstract="true" name="Vestin2017Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="mtrx_MultiemployerPlanZoneByTypeDomain" abstract="true" name="MultiemployerPlanZoneByTypeDomain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="mtrx_NonvestedDeferredSharesMember" abstract="true" name="NonvestedDeferredSharesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="mtrx_GoodwillAttributableToReportingUnitsAtRiskForImpairment" abstract="false" name="GoodwillAttributableToReportingUnitsAtRiskForImpairment" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="mtrx_StorageAndTerminalSolutionsSegmentMember" abstract="true" name="StorageAndTerminalSolutionsSegmentMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="mtrx_CustomerFourMember" abstract="true" name="CustomerFourMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="mtrx_UtilityAndPowerInfrastructureMemberMember" abstract="true" name="UtilityAndPowerInfrastructureMemberMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="mtrx_Warrantyreserveworkingcapitalprovision" abstract="false" name="Warrantyreserveworkingcapitalprovision" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="mtrx_OtherTreasurySharePurchases" abstract="false" name="OtherTreasurySharePurchases" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="mtrx_FixedChargeCoverageRatioMinimum" abstract="false" name="FixedChargeCoverageRatioMinimum" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:decimalItemType"/>
  <xs:element id="mtrx_CARESActCharitableContributionsDeductionOldCeiling" abstract="false" name="CARESActCharitableContributionsDeductionOldCeiling" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="mtrx_CustomerTwelveMember" abstract="true" name="CustomerTwelveMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="mtrx_BusinessAcquisitionProFormaAmortizationofIntangibleAssets" abstract="false" name="BusinessAcquisitionProFormaAmortizationofIntangibleAssets" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="mtrx_Percentageofoutstandingsharesusedtodeterminemaximumsharesauthorizedundersharerepurchaseprogram" abstract="false" name="Percentageofoutstandingsharesusedtodeterminemaximumsharesauthorizedundersharerepurchaseprogram" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="mtrx_MtrxCovenantReliefPeriodCapitalExpendituresLimitPerQuarter" abstract="false" name="MtrxCovenantReliefPeriodCapitalExpendituresLimitPerQuarter" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="mtrx_IBEWLocalUnionNineEightPensionPlanMember" abstract="true" name="IBEWLocalUnionNineEightPensionPlanMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="mtrx_PercentageOfRealEstateLeases" abstract="false" name="PercentageOfRealEstateLeases" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="mtrx_FederalForeignTaxCreditCarryforwardMember" abstract="true" name="FederalForeignTaxCreditCarryforwardMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="mtrx_ForeignTaxCreditCarryforwardsMember" abstract="true" name="ForeignTaxCreditCarryforwardsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="mtrx_PriorCreditAgreementLowestUnusedCreditFacilityFee" abstract="false" name="PriorCreditAgreementLowestUnusedCreditFacilityFee" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="mtrx_OfficeEquipmentAndCapitalizedComputerSoftwareGross" abstract="false" name="OfficeEquipmentAndCapitalizedComputerSoftwareGross" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="mtrx_ZoneYellowMember" abstract="true" name="ZoneYellowMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="mtrx_MultiemployerPlansNumber" abstract="false" name="MultiemployerPlansNumber" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="mtrx_ProcessAndIndustrialFacilitiesSegmentMember" abstract="true" name="ProcessAndIndustrialFacilitiesSegmentMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="mtrx_InternationalMember" abstract="true" name="InternationalMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="mtrx_ReportingUnitMember" abstract="true" name="ReportingUnitMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="mtrx_ShareBasedCompensationArrangementByShareBasedPaymentAwardDeferredSharesVestedAndReleasedWeightedAverageGrantDateFairValue" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardDeferredSharesVestedAndReleasedWeightedAverageGrantDateFairValue" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:perShareItemType"/>
  <xs:element id="mtrx_MtrxSublimitonAustralianDollarCanadianDollarEuroandPoundsSterling" abstract="false" name="MtrxSublimitonAustralianDollarCanadianDollarEuroandPoundsSterling" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="mtrx_AssetBackedCreditFacilityFixedChargeCoverageRatioRequirement" abstract="false" name="AssetBackedCreditFacilityFixedChargeCoverageRatioRequirement" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="mtrx_PercentageOfEmployeeContributionAsBaseForEmployerContributionToMatch" abstract="false" name="PercentageOfEmployeeContributionAsBaseForEmployerContributionToMatch" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="mtrx_ConnecticutPlumbersandPipefittersPensionFundLocal777Member" abstract="true" name="ConnecticutPlumbersandPipefittersPensionFundLocal777Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="mtrx_ShareBasedCompensationArrangementByShareBasedPaymentAwardDeferredWeightedAverageGrantDateFairValue" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardDeferredWeightedAverageGrantDateFairValue" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:perShareItemType"/>
  <xs:element id="mtrx_JointPensionFundLocalUnionOneSixFourIbewMember" abstract="true" name="JointPensionFundLocalUnionOneSixFourIbewMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
</xs:schema>
