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  <xs:element id="cls_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardPerformancePeriod" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardPerformancePeriod" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="cls_ShareBasedCompensationArrangementByShareBasedPaymentAwardAnnualBoardRetainerFeesShareCompensationPercentage" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardAnnualBoardRetainerFeesShareCompensationPercentage" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="cls_ShareBasedCompensationArrangementByShareBasedPaymentAwardRightToReceiveCommonShare" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardRightToReceiveCommonShare" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="cls_ReportingUnitRecoverabilityOfGoodwillStrategicPlanPeriod" abstract="false" name="ReportingUnitRecoverabilityOfGoodwillStrategicPlanPeriod" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="cls_NCSGlobalServicesLLCMember" abstract="true" name="NCSGlobalServicesLLCMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="cls_FiniteLivedIntangibleAssetsAssetsAcquiredIncreaseInAnnualAmortization" abstract="false" name="FiniteLivedIntangibleAssetsAssetsAcquiredIncreaseInAnnualAmortization" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="cls_ComputerSoftwareAndIntellectualPropertyMember" abstract="true" name="ComputerSoftwareAndIntellectualPropertyMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="cls_CustomerRelatedAndBrandIntangibleAssetsMember" abstract="true" name="CustomerRelatedAndBrandIntangibleAssetsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="cls_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAccountsReceivableAndOtherCurrentAssets" abstract="false" name="BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAccountsReceivableAndOtherCurrentAssets" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="cls_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedRightOfUseAssets" abstract="false" name="BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedRightOfUseAssets" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="cls_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAccountsPayableAndAccruedLiabilities" abstract="false" name="BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAccountsPayableAndAccruedLiabilities" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="cls_CCSSegmentMember" abstract="true" name="CCSSegmentMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="cls_ATSSegmentMember" abstract="true" name="ATSSegmentMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="cls_TransferOfFinancialAssetsAccountedForSalesProgramAxis" abstract="true" name="TransferOfFinancialAssetsAccountedForSalesProgramAxis" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType"/>
  <xs:element id="cls_TransferOfFinancialAssetsAccountedForSalesProgramDomain" abstract="true" name="TransferOfFinancialAssetsAccountedForSalesProgramDomain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="cls_ARSalesProgramMember" abstract="true" name="ARSalesProgramMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="cls_SupplierFinancingProgramSFPMember" abstract="true" name="SupplierFinancingProgramSFPMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="cls_TransfersOfFinancialAssetsAccountedForAsSalesMaximumAmountOfReceivablesSold" abstract="false" name="TransfersOfFinancialAssetsAccountedForAsSalesMaximumAmountOfReceivablesSold" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="cls_TransferOfFinancialAssetsAccountedForAsSalesAnnualExtensionPeriod" abstract="false" name="TransferOfFinancialAssetsAccountedForAsSalesAnnualExtensionPeriod" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="cls_TransferOfFinancialAssetsAccountedForAsSalesTerminationNoticePeriod" abstract="false" name="TransferOfFinancialAssetsAccountedForAsSalesTerminationNoticePeriod" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="cls_TransferOfFinancialAssetsAccountedForAsSalesNumberOfParticipatingCustomers" abstract="false" name="TransferOfFinancialAssetsAccountedForAsSalesNumberOfParticipatingCustomers" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="cls_TransferOfFinancialAssetsAccountedForAsSalesReceivablesSoldOutstanding" abstract="false" name="TransferOfFinancialAssetsAccountedForAsSalesReceivablesSoldOutstanding" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="cls_TransferOfFinancialAssetsAccountedForAsSalesReceivablesSoldOutstandingDiscountChargesIncurred" abstract="false" name="TransferOfFinancialAssetsAccountedForAsSalesReceivablesSoldOutstandingDiscountChargesIncurred" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="cls_ShortTermLeaseAndVariableLeaseCost" abstract="false" name="ShortTermLeaseAndVariableLeaseCost" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="cls_LeaseRightOfUseAssetAbstract" abstract="true" name="LeaseRightOfUseAssetAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="cls_LeaseRightOfUseAsset" abstract="false" name="LeaseRightOfUseAsset" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="cls_LeaseObligationCurrentAbstract" abstract="true" name="LeaseObligationCurrentAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="cls_LeaseObligationNoncurrentAbstract" abstract="true" name="LeaseObligationNoncurrentAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="cls_LeaseLiability" abstract="false" name="LeaseLiability" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="cls_WeightedAverageRemainingLeaseTermAbstract" abstract="true" name="WeightedAverageRemainingLeaseTermAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="cls_LeasesWeightedAverageDiscountRateAbstract" abstract="true" name="LeasesWeightedAverageDiscountRateAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="cls_CashFlowLesseeAbstract" abstract="true" name="CashFlowLesseeAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="cls_RightOfUseAssetObtainedInExchangeForLeaseLiabilityAbstract" abstract="true" name="RightOfUseAssetObtainedInExchangeForLeaseLiabilityAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="cls_ReportingUnitAnnualGoodwillImpairmentAssessmentProjectionTerm" abstract="false" name="ReportingUnitAnnualGoodwillImpairmentAssessmentProjectionTerm" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="cls_ReportingUnitAnnualGoodwillImpairmentAssessmentPerpetualGrowthRate" abstract="false" name="ReportingUnitAnnualGoodwillImpairmentAssessmentPerpetualGrowthRate" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="cls_CapitalEquipmentReportingUnitMember" abstract="true" name="CapitalEquipmentReportingUnitMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="cls_AerospaceAndDefenseReportingUnitMember" abstract="true" name="AerospaceAndDefenseReportingUnitMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="cls_PCIPrivateLimitedReportingUnitMember" abstract="true" name="PCIPrivateLimitedReportingUnitMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="cls_NCSReportingUnitMember" abstract="true" name="NCSReportingUnitMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="cls_ImpaktHoldingsLLCMember" abstract="true" name="ImpaktHoldingsLLCMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="cls_AtrenneIntegratedSolutionsMember" abstract="true" name="AtrenneIntegratedSolutionsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="cls_PriorAcquisitionsMember" abstract="true" name="PriorAcquisitionsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="cls_LandRightsNoncurrent" abstract="false" name="LandRightsNoncurrent" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="cls_DeferredInvestmentCostsNoncurrent" abstract="false" name="DeferredInvestmentCostsNoncurrent" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="cls_RestructuringReserveChargesNetOfPriorYearReversals" abstract="false" name="RestructuringReserveChargesNetOfPriorYearReversals" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="cls_StandardProductWarrantyAccrualProvisionsNetOfReversalOfPriorYearProvisions" abstract="false" name="StandardProductWarrantyAccrualProvisionsNetOfReversalOfPriorYearProvisions" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="cls_StandardProductWarrantyAccrualAccretionForeignExchangeAndOther" abstract="false" name="StandardProductWarrantyAccrualAccretionForeignExchangeAndOther" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="cls_TermLoanAMember" abstract="true" name="TermLoanAMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="cls_TermLoanBMember" abstract="true" name="TermLoanBMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="cls_InitialTermLoanMember" abstract="true" name="InitialTermLoanMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="cls_IncrementalTermLoanMember" abstract="true" name="IncrementalTermLoanMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="cls_AlternativeCurrencyDailyRateMember" abstract="true" name="AlternativeCurrencyDailyRateMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="cls_CanadianPrimeRateMember" abstract="true" name="CanadianPrimeRateMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="cls_AlternativeCurrencyTermRateMember" abstract="true" name="AlternativeCurrencyTermRateMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="cls_DebtInstrumentRequiredPrepaymentPercentageOfExcessCashFlow" abstract="false" name="DebtInstrumentRequiredPrepaymentPercentageOfExcessCashFlow" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="cls_LineofCreditFacilityAccordionFeatureIncreaseLimit" abstract="false" name="LineofCreditFacilityAccordionFeatureIncreaseLimit" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
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  <xs:element id="cls_TermALoanMember" abstract="true" name="TermALoanMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="cls_TermBLoanMember" abstract="true" name="TermBLoanMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="cls_LineOfCreditBorrowingAndRepaymentRollForward" abstract="true" name="LineOfCreditBorrowingAndRepaymentRollForward" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="cls_BankGuaranteesAndSuretyBondsMember" abstract="true" name="BankGuaranteesAndSuretyBondsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="cls_BankOverdraftFacilityMember" abstract="true" name="BankOverdraftFacilityMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="cls_LetterOfCreditGuaranteesSuretyBondsAndOverdraftFacilitiesMember" abstract="true" name="LetterOfCreditGuaranteesSuretyBondsAndOverdraftFacilitiesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="cls_RestrictedStockUnitsRSUsAndPerformanceSharesMember" abstract="true" name="RestrictedStockUnitsRSUsAndPerformanceSharesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="cls_DeferredStockUnitDSUsMember" abstract="true" name="DeferredStockUnitDSUsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="cls_LongTermIncentivePlanMember" abstract="true" name="LongTermIncentivePlanMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="cls_SecondaryOfferingMember" abstract="true" name="SecondaryOfferingMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="cls_OnexCorporationMember" abstract="true" name="OnexCorporationMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="cls_Mr.DiMaggioMember" abstract="true" name="Mr.DiMaggioMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="cls_DeepakChopraMember" abstract="true" name="DeepakChopraMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="cls_Ms.PerryMember" abstract="true" name="Ms.PerryMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="cls_Mr.EtheringtonMember" abstract="true" name="Mr.EtheringtonMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="cls_Mr.RyanMember" abstract="true" name="Mr.RyanMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="cls_PreferredStockNumberOfVotesPerShare" abstract="false" name="PreferredStockNumberOfVotesPerShare" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="cls_MultipleVotingSharesVotesPerShare" abstract="false" name="MultipleVotingSharesVotesPerShare" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="cls_ShareRepurchaseProgramContractualMaximumQuantityForCancellationShareAmount" abstract="false" name="ShareRepurchaseProgramContractualMaximumQuantityForCancellationShareAmount" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="cls_ShareBasedCompensationArrangementByShareBasedPaymentAwardCommonShareIssuancePerVestedAward" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardCommonShareIssuancePerVestedAward" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:pureItemType"/>
  <xs:element id="cls_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsPremium" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsPremium" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="cls_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsSettled" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsSettled" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="cls_MultipleVotingSharesMember" abstract="true" name="MultipleVotingSharesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="cls_StockCommonSharesCancelledDuringPeriod" abstract="false" name="StockCommonSharesCancelledDuringPeriod" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="cls_NCIBASPPMember" abstract="true" name="NCIBASPPMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="cls_TreasuryStockCommonValueRollForward" abstract="true" name="TreasuryStockCommonValueRollForward" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="cls_TreasuryStockSharesDeliveredForShareBasedCompensationPlans" abstract="false" name="TreasuryStockSharesDeliveredForShareBasedCompensationPlans" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="cls_CommonStockHeldByTrusteeShareBasedCompensationArrangement" abstract="false" name="CommonStockHeldByTrusteeShareBasedCompensationArrangement" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="cls_MiscellaneousExpenseIncomeMember" abstract="true" name="MiscellaneousExpenseIncomeMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="cls_ShareBasedPaymentArrangementGainsLossesOnChangeInFairValueOfDerivatives" abstract="false" name="ShareBasedPaymentArrangementGainsLossesOnChangeInFairValueOfDerivatives" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="cls_TotalOfEmployeeShareBasedPaymentArrangementExpenseAndGainsLossesOnChangeInFairValueOfDerivatives" abstract="false" name="TotalOfEmployeeShareBasedPaymentArrangementExpenseAndGainsLossesOnChangeInFairValueOfDerivatives" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="cls_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsPerformanceAdjustmentInPeriod" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsPerformanceAdjustmentInPeriod" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="cls_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsPerformanceAdjustmentInPeriodWeightedAverageGrantDateFairValue" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsPerformanceAdjustmentInPeriodWeightedAverageGrantDateFairValue" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:perShareItemType"/>
  <xs:element id="cls_TransitionCostsRecoveries" abstract="false" name="TransitionCostsRecoveries" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="cls_OtherChargesRecoveries" abstract="false" name="OtherChargesRecoveries" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="cls_OtherChargesInventoryBuildingAndEquipmentWriteDown" abstract="false" name="OtherChargesInventoryBuildingAndEquipmentWriteDown" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="cls_RestructuringReserveTransitionCosts" abstract="false" name="RestructuringReserveTransitionCosts" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="cls_RestructuringReserveTransitionRecoveries" abstract="false" name="RestructuringReserveTransitionRecoveries" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="cls_RestructuringReserveOtherCharges" abstract="false" name="RestructuringReserveOtherCharges" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="cls_RestructuringReserveOtherRecoveries" abstract="false" name="RestructuringReserveOtherRecoveries" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="cls_TRSFVAsMember" abstract="true" name="TRSFVAsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="cls_DefinedBenefitPlanPensionAndNonPensionPlanGainLossDueToSettlement" abstract="false" name="DefinedBenefitPlanPensionAndNonPensionPlanGainLossDueToSettlement" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="cls_ServicesAgreementWithOnexMember" abstract="true" name="ServicesAgreementWithOnexMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="cls_InsuranceAnnuitiesAndARatedInvestmentsMember" abstract="true" name="InsuranceAnnuitiesAndARatedInvestmentsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
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  <xs:element id="cls_DefinedBenefitPlanPlanAssetsEmployerDirectBenefitPayments" abstract="false" name="DefinedBenefitPlanPlanAssetsEmployerDirectBenefitPayments" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="cls_DefinedBenefitPlanPlanAssetsBenefitPaymentsFromEmployer" abstract="false" name="DefinedBenefitPlanPlanAssetsBenefitPaymentsFromEmployer" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="cls_DefinedBenefitPlanBenefitObligationAdministrativeExpensesPaid" abstract="false" name="DefinedBenefitPlanBenefitObligationAdministrativeExpensesPaid" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="cls_DefinedBenefitPlanBenefitObligationPaymentForSettlementAndCurtailment" abstract="false" name="DefinedBenefitPlanBenefitObligationPaymentForSettlementAndCurtailment" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
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  <xs:element id="cls_DefinedBenefitPlanWeightedAverageDurationOfBenefitObligations" abstract="false" name="DefinedBenefitPlanWeightedAverageDurationOfBenefitObligations" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="cls_DefinedBenefitPlanDiscountRateEffectOfOnePercentagePointIncreaseOnAccumulatedPostretirementBenefitObligation" abstract="false" name="DefinedBenefitPlanDiscountRateEffectOfOnePercentagePointIncreaseOnAccumulatedPostretirementBenefitObligation" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
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  <xs:element id="cls_DefinedBenefitAndContributionPlansExpectedFutureEmployerContributionsNextFiscalYear" abstract="false" name="DefinedBenefitAndContributionPlansExpectedFutureEmployerContributionsNextFiscalYear" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="cls_DefinedBenefitPlanExpectedFutureBenefitPaymentThereafter" abstract="false" name="DefinedBenefitPlanExpectedFutureBenefitPaymentThereafter" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="cls_DefinedBenefitPlanExpectedFutureBenefitPayment" abstract="false" name="DefinedBenefitPlanExpectedFutureBenefitPayment" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
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  <xs:element id="cls_EffectiveIncomeTaxRateReconciliationNondeductibleExpenseOtherTaxUncertaintiesAmount" abstract="false" name="EffectiveIncomeTaxRateReconciliationNondeductibleExpenseOtherTaxUncertaintiesAmount" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
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  <xs:element id="cls_EffectiveIncomeTaxRateReconciliationRepatriationOfForeignEarningsAndTaxableTemporaryDifferencesWithExpectedUndistributedForeignEarningsAmount" abstract="false" name="EffectiveIncomeTaxRateReconciliationRepatriationOfForeignEarningsAndTaxableTemporaryDifferencesWithExpectedUndistributedForeignEarningsAmount" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="cls_CurrentIncomeTaxExpenseRepatriationExpense" abstract="false" name="CurrentIncomeTaxExpenseRepatriationExpense" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="cls_IncomeTaxHolidayDescriptionAxis" abstract="true" name="IncomeTaxHolidayDescriptionAxis" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType"/>
  <xs:element id="cls_IncomeTaxHolidayDescriptionDomain" abstract="true" name="IncomeTaxHolidayDescriptionDomain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="cls_IncomeTaxHolidayPeriodOneMember" abstract="true" name="IncomeTaxHolidayPeriodOneMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="cls_IncomeTaxHolidayPeriodTwoMember" abstract="true" name="IncomeTaxHolidayPeriodTwoMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="cls_IncomeTaxHolidayPeriodThreeMember" abstract="true" name="IncomeTaxHolidayPeriodThreeMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="cls_IncomeTaxHolidayPeriodFourMember" abstract="true" name="IncomeTaxHolidayPeriodFourMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="cls_IncomeTaxHolidayPeriodFiveMember" abstract="true" name="IncomeTaxHolidayPeriodFiveMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="cls_IncomeTaxHolidayPeriodSixMember" abstract="true" name="IncomeTaxHolidayPeriodSixMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="cls_EffectiveIncomeTaxRateReconciliationDeferredIncomeTaxAcquisitionAndDeductibleTemporaryDifferencesAmount" abstract="false" name="EffectiveIncomeTaxRateReconciliationDeferredIncomeTaxAcquisitionAndDeductibleTemporaryDifferencesAmount" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="cls_EffectiveIncomeTaxRateReconciliationNondeductibleExpenseOtherTaxUncertaintiesReversalsAmount" abstract="false" name="EffectiveIncomeTaxRateReconciliationNondeductibleExpenseOtherTaxUncertaintiesReversalsAmount" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="cls_EffectiveIncomeTaxRateReconciliationForeignExchangeImpactAmount" abstract="false" name="EffectiveIncomeTaxRateReconciliationForeignExchangeImpactAmount" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="cls_EffectiveIncomeTaxRateReconciliationPriorYearUndistributedEarningsWithholdingTaxAmount" abstract="false" name="EffectiveIncomeTaxRateReconciliationPriorYearUndistributedEarningsWithholdingTaxAmount" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
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  <xs:element id="cls_DeferredTaxAssetTaxableTemporaryDifferenceInvestmentInSubsidiaries" abstract="false" name="DeferredTaxAssetTaxableTemporaryDifferenceInvestmentInSubsidiaries" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="cls_DeferredTaxAssetsOperatingLossCarryforwardsNetOfValuationAllowance" abstract="false" name="DeferredTaxAssetsOperatingLossCarryforwardsNetOfValuationAllowance" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
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  <xs:element id="cls_IncomeTaxHolidayPeriod" abstract="false" name="IncomeTaxHolidayPeriod" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="cls_IncomeTaxHolidayAggregateBenefit" abstract="false" name="IncomeTaxHolidayAggregateBenefit" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="cls_DeferredTaxAssetsOperatingLossAndTaxCreditCarryforwards" abstract="false" name="DeferredTaxAssetsOperatingLossAndTaxCreditCarryforwards" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="cls_DeferredTaxLiabilitiesPropertyPlantAndEquipmentAndIntangibles" abstract="false" name="DeferredTaxLiabilitiesPropertyPlantAndEquipmentAndIntangibles" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="cls_CreditFacilityTermLoansMember" abstract="true" name="CreditFacilityTermLoansMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="cls_DerivativeInstrumentDetailsAxis" abstract="true" name="DerivativeInstrumentDetailsAxis" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType"/>
  <xs:element id="cls_DerivativeInstrumentDetailsDomain" abstract="true" name="DerivativeInstrumentDetailsDomain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="cls_AdditonalIncrementalSwapMember" abstract="true" name="AdditonalIncrementalSwapMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="cls_DerivativeInstrumentEffectOfOnePercentagePointIncreaseToInterestRatesIncreaseInInterestExpense" abstract="false" name="DerivativeInstrumentEffectOfOnePercentagePointIncreaseToInterestRatesIncreaseInInterestExpense" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
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  <xs:element id="cls_DerivativeInstrumentEffectOf25BasisPointIncreaseInInterestRatesIncreaseInUnrealizedGains" abstract="false" name="DerivativeInstrumentEffectOf25BasisPointIncreaseInInterestRatesIncreaseInUnrealizedGains" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
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  <xs:element id="cls_DerivativeWeightedAveragePricePerShare" abstract="false" name="DerivativeWeightedAveragePricePerShare" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:perShareItemType"/>
  <xs:element id="cls_DerivativeInstrumentAnnualExtensionPeriod" abstract="false" name="DerivativeInstrumentAnnualExtensionPeriod" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="cls_DerivativeInstrumentDecreaseInNonmonetaryNotionalAmountShares" abstract="false" name="DerivativeInstrumentDecreaseInNonmonetaryNotionalAmountShares" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
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  <xs:element id="cls_RomanianTaxAuthorityMember" abstract="true" name="RomanianTaxAuthorityMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="cls_ThailandTaxAuthorityMember" abstract="true" name="ThailandTaxAuthorityMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
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  <xs:element id="cls_CCSCommunicationsMember" abstract="true" name="CCSCommunicationsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="cls_CCSEnterpriseMember" abstract="true" name="CCSEnterpriseMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="cls_SegmentConcentrationRiskMember" abstract="true" name="SegmentConcentrationRiskMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="cls_CostOfGoodsAndServicesSoldAdjusted" abstract="false" name="CostOfGoodsAndServicesSoldAdjusted" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="cls_TotalSegmentCosts" abstract="false" name="TotalSegmentCosts" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="cls_SegmentMarginPercentage" abstract="false" name="SegmentMarginPercentage" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="cls_FCCTransitionalADJGains" abstract="false" name="FCCTransitionalADJGains" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="cls_PropertyPlantAndEquipmentAndOperatingLeaseRightOfUseAssetBenchmarkMember" abstract="true" name="PropertyPlantAndEquipmentAndOperatingLeaseRightOfUseAssetBenchmarkMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
</xs:schema>
