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<link:definition>1010 - Disclosure - Fair Value Measurements</link:definition>
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<link:definition>1011 - Disclosure - Accounts Receivable</link:definition>
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<link:definition>1012 - Disclosure - Inventories</link:definition>
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<link:definition>1013 - Disclosure - Property, Plant and Equipment</link:definition>
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<link:definition>1014 - Disclosure - Intangible Assets</link:definition>
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<link:definition>1015 - Disclosure - Leases</link:definition>
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<link:definition>1017 - Disclosure - Derivative Financial Instruments</link:definition>
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<link:definition>1018 - Disclosure - Borrowings</link:definition>
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<link:definition>1019 - Disclosure - Accrued Severance Benefits</link:definition>
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<link:definition>1020 - Disclosure - Stockholders' Equity and Stock-Based Compensation</link:definition>
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<link:definition>1021 - Disclosure - Early termination and other charges, net</link:definition>
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<link:definition>1022 - Disclosure - Foreign Currency Loss, Net</link:definition>
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<link:definition>1023 - Disclosure - Income Taxes</link:definition>
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<link:definition>1024 - Disclosure - Geographic and Other Information</link:definition>
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<link:definition>1025 - Disclosure - Merger Agreement</link:definition>
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<link:definition>1026 - Disclosure - Commitments and Contingencies</link:definition>
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<link:definition>1027 - Disclosure - Accumulated Other Comprehensive Loss</link:definition>
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<link:definition>1028 - Disclosure - Earnings (Loss) Per Share</link:definition>
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<link:definition>1029 - Disclosure - Business, Basis of Presentation and Significant Accounting Policies (Policies)</link:definition>
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<link:definition>1030 - Disclosure - Business, Basis of Presentation and Significant Accounting Policies (Tables)</link:definition>
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<link:definition>1031 - Disclosure - Discontinued Operations (Tables)</link:definition>
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<link:definition>1032 - Disclosure - Fair Value Measurements (Tables)</link:definition>
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<link:definition>1033 - Disclosure - Accounts Receivable (Tables)</link:definition>
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<link:definition>1034 - Disclosure - Inventories (Tables)</link:definition>
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<link:definition>1035 - Disclosure - Property, Plant and Equipment (Tables)</link:definition>
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<link:definition>1036 - Disclosure - Intangible Assets (Tables)</link:definition>
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<link:definition>1037 - Disclosure - Leases (Tables)</link:definition>
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<link:definition>1038 - Disclosure - Accrued Expenses (Tables)</link:definition>
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<link:definition>1039 - Disclosure - Derivative Financial Instruments (Tables)</link:definition>
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<link:definition>1040 - Disclosure - Accrued Severance Benefits (Tables)</link:definition>
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<link:definition>1041 - Disclosure - Stockholders' Equity and Stock-Based Compensation (Tables)</link:definition>
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<link:definition>1042 - Disclosure - Income Taxes (Tables)</link:definition>
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<link:definition>1043 - Disclosure - Geographic and Other Information (Tables)</link:definition>
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<link:definition>1044 - Disclosure - Accumulated Other Comprehensive Loss (Tables)</link:definition>
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<link:definition>1045 - Disclosure - Earnings (Loss) Per Share (Tables)</link:definition>
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<link:definition>1046 - Disclosure - Business, Basis of Presentation and Significant Accounting Policies - Additional Information (Detail)</link:definition>
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<link:definition>1047 - Disclosure - Business, Basis of Presentation and Significant Accounting Policies - Estimated Useful Lives of Assets (Detail)</link:definition>
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<link:definition>1048 - Disclosure - Discontinued Operations and Assets Held for Sale - Additional Information (Detail)</link:definition>
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<link:definition>1049 - Disclosure - Discontinued Operations and Assets Held for Sale - Schedule Of Results From Discontinued Operations (Detail)</link:definition>
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<link:usedOn>link:definitionLink</link:usedOn>
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<link:definition>1050 - Disclosure - Discontinued Operations and Assets Held for Sale - Schedule Of Results From Discontinued Operations Alternative Cash Flow Information (Detail)</link:definition>
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<link:definition>1051 - Disclosure - Fair Value Measurements - Financial Assets and Liabilities Measured at Fair Value on Recurring Basis (Detail)</link:definition>
<link:usedOn>link:presentationLink</link:usedOn>
<link:usedOn>link:definitionLink</link:usedOn>
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<link:roleType roleURI="http://www.magnachip.com/role/AccountsReceivableAdditionalInformationDetail" id="AccountsReceivableAdditionalInformationDetail">
<link:definition>1052 - Disclosure - Accounts Receivable - Additional Information (Detail)</link:definition>
<link:usedOn>link:presentationLink</link:usedOn>
<link:usedOn>link:definitionLink</link:usedOn>
<link:usedOn>link:calculationLink</link:usedOn>
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<link:roleType roleURI="http://www.magnachip.com/role/AccountsReceivableScheduleOfAccountsReceivableDetail" id="AccountsReceivableScheduleOfAccountsReceivableDetail">
<link:definition>1053 - Disclosure - Accounts Receivable - Schedule of Accounts Receivable (Detail)</link:definition>
<link:usedOn>link:presentationLink</link:usedOn>
<link:usedOn>link:definitionLink</link:usedOn>
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<link:roleType roleURI="http://www.magnachip.com/role/AccountsReceivableScheduleOfChangesInAllowanceForCreditLossesDetail" id="AccountsReceivableScheduleOfChangesInAllowanceForCreditLossesDetail">
<link:definition>1054 - Disclosure - Accounts Receivable - Schedule of Changes in Allowance for Credit Losses (Detail)</link:definition>
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<link:usedOn>link:definitionLink</link:usedOn>
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<link:roleType roleURI="http://www.magnachip.com/role/AccountsReceivableScheduleOfChangesInSalesReturnReserveDetail" id="AccountsReceivableScheduleOfChangesInSalesReturnReserveDetail">
<link:definition>1055 - Disclosure - Accounts Receivable - Schedule of Changes in Sales Return Reserve (Detail)</link:definition>
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<link:usedOn>link:definitionLink</link:usedOn>
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<link:roleType roleURI="http://www.magnachip.com/role/InventoriesSummaryOfInventoriesDetail" id="InventoriesSummaryOfInventoriesDetail">
<link:definition>1056 - Disclosure - Inventories - Summary of Inventories (Detail)</link:definition>
<link:usedOn>link:presentationLink</link:usedOn>
<link:usedOn>link:definitionLink</link:usedOn>
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<link:roleType roleURI="http://www.magnachip.com/role/InventoriesChangesInInventoryReserveDetail" id="InventoriesChangesInInventoryReserveDetail">
<link:definition>1057 - Disclosure - Inventories - Changes in Inventory Reserve (Detail)</link:definition>
<link:usedOn>link:presentationLink</link:usedOn>
<link:usedOn>link:definitionLink</link:usedOn>
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<element name="EarlyTerminationAndOtherChargesNet" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" nillable="true" id="mx_EarlyTerminationAndOtherChargesNet" substitutionGroup="xbrli:item" xbrli:balance="debit" />
<element name="MergerrelatedCostsIncomeNet" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" nillable="true" id="mx_MergerrelatedCostsIncomeNet" substitutionGroup="xbrli:item" xbrli:balance="debit" />
<element name="Acceleratedsharerepurchaseprogramadjustmentshares" type="xbrli:sharesItemType" abstract="false" xbrli:periodType="duration" nillable="true" id="mx_Acceleratedsharerepurchaseprogramadjustmentshares" substitutionGroup="xbrli:item" />
<element name="CommonStockOutstandingMember" type="dtr-types:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="mx_CommonStockOutstandingMember" substitutionGroup="xbrli:item" />
<element name="ExchangeOfExchangeableSeniorNotesIntoCommonStock" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" nillable="true" id="mx_ExchangeOfExchangeableSeniorNotesIntoCommonStock" substitutionGroup="xbrli:item" xbrli:balance="debit" />
<element name="AcquisitionOfTreasuryStockRelatedToTaxWithHoldingForShareBasedCompensation" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" nillable="true" id="mx_AcquisitionOfTreasuryStockRelatedToTaxWithHoldingForShareBasedCompensation" substitutionGroup="xbrli:item" xbrli:balance="credit" />
<element name="UnsettledCommonStockRepurchases" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" nillable="true" id="mx_UnsettledCommonStockRepurchases" substitutionGroup="xbrli:item" xbrli:balance="credit" />
<element name="PaymentUnderAcceleratedStockRepurchaseAgreement" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" nillable="true" id="mx_PaymentUnderAcceleratedStockRepurchaseAgreement" substitutionGroup="xbrli:item" xbrli:balance="debit" />
<element name="AcquisitionOfStockUnderAcceleratedStockRepurchaseAgreement" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" nillable="true" id="mx_AcquisitionOfStockUnderAcceleratedStockRepurchaseAgreement" substitutionGroup="xbrli:item" xbrli:balance="credit" />
<element name="RepaymentOfFinancingRelatedToWaterTreatmentFacilityArrangement" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" nillable="true" id="mx_RepaymentOfFinancingRelatedToWaterTreatmentFacilityArrangement" substitutionGroup="xbrli:item" xbrli:balance="credit" />
<element name="IncreaseDecreaseInContractLiability" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" nillable="true" id="mx_IncreaseDecreaseInContractLiability" substitutionGroup="xbrli:item" xbrli:balance="debit" />
<element name="IncreaseDecreaseInContractWithCustomerAssetUnbilledReceivables" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" nillable="true" id="mx_IncreaseDecreaseInContractWithCustomerAssetUnbilledReceivables" substitutionGroup="xbrli:item" xbrli:balance="credit" />
<element name="ContributionsToSeveranceInsuranceDepositAccounts" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" nillable="true" id="mx_ContributionsToSeveranceInsuranceDepositAccounts" substitutionGroup="xbrli:item" xbrli:balance="debit" />
<element name="ForeignCurrencyTransactionGainLossBeforeTaxIncludingIntercompanyBalances" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" nillable="true" id="mx_ForeignCurrencyTransactionGainLossBeforeTaxIncludingIntercompanyBalances" substitutionGroup="xbrli:item" xbrli:balance="credit" />
<element name="IncreaseDecreaseInInventoryReserve" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" nillable="true" id="mx_IncreaseDecreaseInInventoryReserve" substitutionGroup="xbrli:item" xbrli:balance="debit" />
<element name="IncreaseDecreaseInDeferredIncomeTaxAssets" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" nillable="true" id="mx_IncreaseDecreaseInDeferredIncomeTaxAssets" substitutionGroup="xbrli:item" xbrli:balance="debit" />
<element name="ProceedsFromGuaranteeDeposits" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" nillable="true" id="mx_ProceedsFromGuaranteeDeposits" substitutionGroup="xbrli:item" xbrli:balance="debit" />
<element name="PaymentsForGuaranteeDeposits" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" nillable="true" id="mx_PaymentsForGuaranteeDeposits" substitutionGroup="xbrli:item" xbrli:balance="credit" />
<element name="DiscontinuedOperationsAndAssetsHeldForSaleAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="mx_DiscontinuedOperationsAndAssetsHeldForSaleAbstract" substitutionGroup="xbrli:item" />
<element name="DisclosureOfDiscontinuedOperationsAndAssetsHeldForSaleTextBlock" type="dtr-types:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" id="mx_DisclosureOfDiscontinuedOperationsAndAssetsHeldForSaleTextBlock" substitutionGroup="xbrli:item" />
<element name="AdvancesToSuppliersPolicyTextBlock" type="dtr-types:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" id="mx_AdvancesToSuppliersPolicyTextBlock" substitutionGroup="xbrli:item" />
<element name="AccruedSeveranceAndPensionLiabilitiesPolicyTextBlock" type="dtr-types:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" id="mx_AccruedSeveranceAndPensionLiabilitiesPolicyTextBlock" substitutionGroup="xbrli:item" />
<element name="PatentsAndLicensesPolicyTextBlock" type="dtr-types:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" id="mx_PatentsAndLicensesPolicyTextBlock" substitutionGroup="xbrli:item" />
<element name="ScheduleOfPropertyPlantAndEquipmentEstimatedUsefulLifeTableTextBlock" type="dtr-types:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" id="mx_ScheduleOfPropertyPlantAndEquipmentEstimatedUsefulLifeTableTextBlock" substitutionGroup="xbrli:item" />
<element name="ScheduleOfDisposalGroupNotDiscontinuedOperationIncomeStatementDisclosuresTableTextBlock" type="dtr-types:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" id="mx_ScheduleOfDisposalGroupNotDiscontinuedOperationIncomeStatementDisclosuresTableTextBlock" substitutionGroup="xbrli:item" />
<element name="ScheduleOfDisposalGroupNotDiscontinuedOperationAlternativeCashFlowInformationDisclosuresTableTextBlock" type="dtr-types:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" id="mx_ScheduleOfDisposalGroupNotDiscontinuedOperationAlternativeCashFlowInformationDisclosuresTableTextBlock" substitutionGroup="xbrli:item" />
<element name="AllowanceForSalesReturnMember" type="dtr-types:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="mx_AllowanceForSalesReturnMember" substitutionGroup="xbrli:item" />
<element name="AllowanceForSalesReturnsTableTextBlock" type="dtr-types:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" id="mx_AllowanceForSalesReturnsTableTextBlock" substitutionGroup="xbrli:item" />
<element name="ChangesInInventoryReservesTableTextBlock" type="dtr-types:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" id="mx_ChangesInInventoryReservesTableTextBlock" substitutionGroup="xbrli:item" />
<element name="ScheduleOfFutureLeasePaymentsTableTextBlock" type="dtr-types:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" id="mx_ScheduleOfFutureLeasePaymentsTableTextBlock" substitutionGroup="xbrli:item" />
<element name="OtherLeaseInformationTableTextBlock" type="dtr-types:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" id="mx_OtherLeaseInformationTableTextBlock" substitutionGroup="xbrli:item" />
<element name="SupplementalBalanceSheetInformationRelatedToLeasesTableTextBlock" type="dtr-types:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" id="mx_SupplementalBalanceSheetInformationRelatedToLeasesTableTextBlock" substitutionGroup="xbrli:item" />
<element name="ScheduleOfDepositAssetsTableTextBlock" type="dtr-types:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" id="mx_ScheduleOfDepositAssetsTableTextBlock" substitutionGroup="xbrli:item" />
<element name="SummaryOfValuationAllowancePrimarilyAttributableToItsSubsidiaryTableTextBlock" type="dtr-types:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" id="mx_SummaryOfValuationAllowancePrimarilyAttributableToItsSubsidiaryTableTextBlock" substitutionGroup="xbrli:item" />
<element name="ValuationAllowanceDeferredTaxAssetsTableTextBlock" type="dtr-types:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" id="mx_ValuationAllowanceDeferredTaxAssetsTableTextBlock" substitutionGroup="xbrli:item" />
<element name="ScheduleOfComponentsOfAccumulatedOtherComprehensiveIncomeLossTableTextBlock" type="dtr-types:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" id="mx_ScheduleOfComponentsOfAccumulatedOtherComprehensiveIncomeLossTableTextBlock" substitutionGroup="xbrli:item" />
<element name="BasisOfPresentationAndSummaryOfSignificantAccountingPoliciesTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="mx_BasisOfPresentationAndSummaryOfSignificantAccountingPoliciesTable" substitutionGroup="xbrldt:hypercubeItem" />
<element name="BasisOfPresentationAndSummaryOfSignificantAccountingPoliciesLineItems" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="mx_BasisOfPresentationAndSummaryOfSignificantAccountingPoliciesLineItems" substitutionGroup="xbrli:item" />
<element name="EmployeesEligibleForSeveranceBenefitsPercentage" type="dtr-types:percentItemType" abstract="false" xbrli:periodType="instant" nillable="true" id="mx_EmployeesEligibleForSeveranceBenefitsPercentage" substitutionGroup="xbrli:item" />
<element name="IncomeTaxRecognizedTaxPositionRealizedUponUltimateSettlement" type="dtr-types:percentItemType" abstract="false" xbrli:periodType="duration" nillable="true" id="mx_IncomeTaxRecognizedTaxPositionRealizedUponUltimateSettlement" substitutionGroup="xbrli:item" />
<element name="FoundryServicesGroupMember" type="dtr-types:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="mx_FoundryServicesGroupMember" substitutionGroup="xbrli:item" />
<element name="MxFoundryServicesGroupMember" type="dtr-types:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="mx_MxFoundryServicesGroupMember" substitutionGroup="xbrli:item" />
<element name="ScheduleOfDisposalGroupNotDiscontinuedOperationIncomeStatementTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="mx_ScheduleOfDisposalGroupNotDiscontinuedOperationIncomeStatementTable" substitutionGroup="xbrldt:hypercubeItem" />
<element name="ScheduleOfDisposalGroupNotDiscontinuedOperationIncomeStatementLineItems" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="mx_ScheduleOfDisposalGroupNotDiscontinuedOperationIncomeStatementLineItems" substitutionGroup="xbrli:item" />
<element name="RestructuringAndOtherExpenses" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" nillable="true" id="mx_RestructuringAndOtherExpenses" substitutionGroup="xbrli:item" xbrli:balance="debit" />
<element name="FoundryServicesGroupAndFabFourMember" type="dtr-types:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="mx_FoundryServicesGroupAndFabFourMember" substitutionGroup="xbrli:item" />
<element name="DisposalGroupincludingDiscontinuedoperationRevenues" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" nillable="true" id="mx_DisposalGroupincludingDiscontinuedoperationRevenues" substitutionGroup="xbrli:item" xbrli:balance="credit" />
<element name="DisposalGroupIncludingDiscontinuedOperationCostOfGoodsSold" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" nillable="true" id="mx_DisposalGroupIncludingDiscontinuedOperationCostOfGoodsSold" substitutionGroup="xbrli:item" xbrli:balance="debit" />
<element name="DiscontinuedOperationTransactionCosts" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" nillable="true" id="mx_DiscontinuedOperationTransactionCosts" substitutionGroup="xbrli:item" xbrli:balance="debit" />
<element name="DisposalGroupIncludingDiscontinuedOperationForeignCurrencyTransactionGainLossBeforeTax" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" nillable="true" id="mx_DisposalGroupIncludingDiscontinuedOperationForeignCurrencyTransactionGainLossBeforeTax" substitutionGroup="xbrli:item" xbrli:balance="credit" />
<element name="DisposalGroupIncludingDiscontinuedOperationOtherIncomeLoss" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" nillable="true" id="mx_DisposalGroupIncludingDiscontinuedOperationOtherIncomeLoss" substitutionGroup="xbrli:item" xbrli:balance="credit" />
<element name="DisposalGroupIncludingDiscontinuedOperationResearchAndDevelopmentExpense" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" nillable="true" id="mx_DisposalGroupIncludingDiscontinuedOperationResearchAndDevelopmentExpense" substitutionGroup="xbrli:item" xbrli:balance="debit" />
<element name="DisposalGroupIncludingDiscontinuedOperationRestructuringAndOtherExpenses" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" nillable="true" id="mx_DisposalGroupIncludingDiscontinuedOperationRestructuringAndOtherExpenses" substitutionGroup="xbrli:item" xbrli:balance="debit" />
<element name="ScheduleOfDisposalGroupNotDiscontinuedOperationAlternativeCashFlowInformationTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="mx_ScheduleOfDisposalGroupNotDiscontinuedOperationAlternativeCashFlowInformationTable" substitutionGroup="xbrldt:hypercubeItem" />
<element name="ScheduleOfDisposalGroupNotDiscontinuedOperationAlternativeCashFlowInformationLineItems" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="mx_ScheduleOfDisposalGroupNotDiscontinuedOperationAlternativeCashFlowInformationLineItems" substitutionGroup="xbrli:item" />
<element name="ProvisionForSeveranceBenefitsDiscontinuedOperations" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" nillable="true" id="mx_ProvisionForSeveranceBenefitsDiscontinuedOperations" substitutionGroup="xbrli:item" xbrli:balance="debit" />
<element name="StockBasedCompensationDiscontinuedOperations" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" nillable="true" id="mx_StockBasedCompensationDiscontinuedOperations" substitutionGroup="xbrli:item" xbrli:balance="debit" />
<element name="FoundryServicesGroupAndFabThreeFoundryServicesMember" type="dtr-types:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="mx_FoundryServicesGroupAndFabThreeFoundryServicesMember" substitutionGroup="xbrli:item" />
<element name="AllowanceForSalesReturns" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" nillable="true" id="mx_AllowanceForSalesReturns" substitutionGroup="xbrli:item" xbrli:balance="credit" />
<element name="AllowanceForDoubtfulAccountsReceivableTranslationAdjustment" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" nillable="true" id="mx_AllowanceForDoubtfulAccountsReceivableTranslationAdjustment" substitutionGroup="xbrli:item" xbrli:balance="credit" />
<element name="AllowanceForSalesReturnsTranslationAdjustments" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" nillable="true" id="mx_AllowanceForSalesReturnsTranslationAdjustments" substitutionGroup="xbrli:item" xbrli:balance="credit" />
<element name="AllowanceForSalesReturnsWriteOffs" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" nillable="true" id="mx_AllowanceForSalesReturnsWriteOffs" substitutionGroup="xbrli:item" xbrli:balance="debit" />
<element name="ProvisionForSalesReturnsNetOfRecoveries" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" nillable="true" id="mx_ProvisionForSalesReturnsNetOfRecoveries" substitutionGroup="xbrli:item" xbrli:balance="debit" />
<element name="AssetsReclassifiedToHeldForSaleAssets" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" nillable="true" id="mx_AssetsReclassifiedToHeldForSaleAssets" substitutionGroup="xbrli:item" xbrli:balance="credit" />
<element name="InventoryValuationReservesForeignCurrencyTranslationAdjustments" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" nillable="true" id="mx_InventoryValuationReservesForeignCurrencyTranslationAdjustments" substitutionGroup="xbrli:item" xbrli:balance="credit" />
<element name="InventoryValuationReservesChangesAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="mx_InventoryValuationReservesChangesAbstract" substitutionGroup="xbrli:item" />
<element name="SaleOfPreviouslyReservedInventory" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" nillable="true" id="mx_SaleOfPreviouslyReservedInventory" substitutionGroup="xbrli:item" xbrli:balance="debit" />
<element name="InventoryValuationReservesChanges" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" nillable="true" id="mx_InventoryValuationReservesChanges" substitutionGroup="xbrli:item" xbrli:balance="credit" />
<element name="InventoryReserveChargedToCostsOfSales" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" nillable="true" id="mx_InventoryReserveChargedToCostsOfSales" substitutionGroup="xbrli:item" xbrli:balance="credit" />
<element name="FinanceLeaseRightOfUseAssetsMember" type="dtr-types:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="mx_FinanceLeaseRightOfUseAssetsMember" substitutionGroup="xbrli:item" />
<element name="RemainingLeaseTerm" type="xbrli:durationItemType" abstract="false" xbrli:periodType="duration" nillable="true" id="mx_RemainingLeaseTerm" substitutionGroup="xbrli:item" />
<element name="CurrentOperatingLeaseLiabilitiesMember" type="dtr-types:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="mx_CurrentOperatingLeaseLiabilitiesMember" substitutionGroup="xbrli:item" />
<element name="NonCurrentoperatingLeaseLiabilitiesMember" type="dtr-types:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="mx_NonCurrentoperatingLeaseLiabilitiesMember" substitutionGroup="xbrli:item" />
<element name="OperatingLeaseRightOfUseAssetsMember" type="dtr-types:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="mx_OperatingLeaseRightOfUseAssetsMember" substitutionGroup="xbrli:item" />
<element name="LeaseLiabilities" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" nillable="true" id="mx_LeaseLiabilities" substitutionGroup="xbrli:item" xbrli:balance="credit" />
<element name="LeasesAssetsAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="mx_LeasesAssetsAbstract" substitutionGroup="xbrli:item" />
<element name="LeaseRightOfUseAsset" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" nillable="true" id="mx_LeaseRightOfUseAsset" substitutionGroup="xbrli:item" xbrli:balance="debit" />
<element name="LeaseLiabilitiesNoncurrentAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="mx_LeaseLiabilitiesNoncurrentAbstract" substitutionGroup="xbrli:item" />
<element name="LeaseLiabilitiesCurrentAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="mx_LeaseLiabilitiesCurrentAbstract" substitutionGroup="xbrli:item" />
<element name="WeightedAverageRemainingLeaseTermAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="mx_WeightedAverageRemainingLeaseTermAbstract" substitutionGroup="xbrli:item" />
<element name="WeightedAverageDiscountRateAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="mx_WeightedAverageDiscountRateAbstract" substitutionGroup="xbrli:item" />
<element name="CashPaidForAmountsIncludedInMeasurementOfLeaseLiabilitiesAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="mx_CashPaidForAmountsIncludedInMeasurementOfLeaseLiabilitiesAbstract" substitutionGroup="xbrli:item" />
<element name="FinanceLeasesAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="mx_FinanceLeasesAbstract" substitutionGroup="xbrli:item" />
<element name="AccruedOutsideServiceFeesCurrent" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" nillable="true" id="mx_AccruedOutsideServiceFeesCurrent" substitutionGroup="xbrli:item" xbrli:balance="credit" />
<element name="MergerRelatedCosts" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" nillable="true" id="mx_MergerRelatedCosts" substitutionGroup="xbrli:item" xbrli:balance="debit" />
<element name="NomuraFinancialInvestmentCoLtdMember" type="dtr-types:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="mx_NomuraFinancialInvestmentCoLtdMember" substitutionGroup="xbrli:item" />
<element name="StandardCharteredBankKoreaLimitedMember" type="dtr-types:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="mx_StandardCharteredBankKoreaLimitedMember" substitutionGroup="xbrli:item" />
<element name="ZeroCostCollarAndForwardContractsMember" type="dtr-types:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="mx_ZeroCostCollarAndForwardContractsMember" substitutionGroup="xbrli:item" />
<element name="CashCollateralForCoveringCreditExposureInDerivatives" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" nillable="true" id="mx_CashCollateralForCoveringCreditExposureInDerivatives" substitutionGroup="xbrli:item" xbrli:balance="debit" />
<element name="MinimumSumOfQualifiedAndUnrestrictedCashAndCashEquivalents" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" nillable="true" id="mx_MinimumSumOfQualifiedAndUnrestrictedCashAndCashEquivalents" substitutionGroup="xbrli:item" xbrli:balance="debit" />
<element name="ThresholdAmountCashCollateralForeignCurrencyExposure" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" nillable="true" id="mx_ThresholdAmountCashCollateralForeignCurrencyExposure" substitutionGroup="xbrli:item" xbrli:balance="credit" />
<element name="DerivativeSettlementStartDateMonthYear" type="xbrli:gYearMonthItemType" abstract="false" xbrli:periodType="duration" nillable="true" id="mx_DerivativeSettlementStartDateMonthYear" substitutionGroup="xbrli:item" />
<element name="DerivativeSettlementEndDateMonthYear" type="xbrli:gYearMonthItemType" abstract="false" xbrli:periodType="duration" nillable="true" id="mx_DerivativeSettlementEndDateMonthYear" substitutionGroup="xbrli:item" />
<element name="DescriptionOfTypeOfCashFlowHedgingInstrumentsUsed" type="xbrli:stringItemType" abstract="false" xbrli:periodType="duration" nillable="true" id="mx_DescriptionOfTypeOfCashFlowHedgingInstrumentsUsed" substitutionGroup="xbrli:item" />
<element name="ZeroCostCollarOneMember" type="dtr-types:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="mx_ZeroCostCollarOneMember" substitutionGroup="xbrli:item" />
<element name="ZeroCostCollarTwoMember" type="dtr-types:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="mx_ZeroCostCollarTwoMember" substitutionGroup="xbrli:item" />
<element name="ZeroCostCollarThreeMember" type="dtr-types:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="mx_ZeroCostCollarThreeMember" substitutionGroup="xbrli:item" />
<element name="ZeroCostCollarsMember" type="dtr-types:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="mx_ZeroCostCollarsMember" substitutionGroup="xbrli:item" />
<element name="DepositAssetsTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="mx_DepositAssetsTable" substitutionGroup="xbrldt:hypercubeItem" />
<element name="DepositAssetsLineItems" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="mx_DepositAssetsLineItems" substitutionGroup="xbrli:item" />
<element name="ExchangeableSeniorNotesMember" type="dtr-types:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="mx_ExchangeableSeniorNotesMember" substitutionGroup="xbrli:item" />
<element name="FivePointZeroPercentageExchangeableSeniorNotesDueTwoThousandTwentyOneMember" type="dtr-types:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="mx_FivePointZeroPercentageExchangeableSeniorNotesDueTwoThousandTwentyOneMember" substitutionGroup="xbrli:item" />
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<element name="DebtInstrumentPricing" type="dtr-types:percentItemType" abstract="false" xbrli:periodType="duration" nillable="true" id="mx_DebtInstrumentPricing" substitutionGroup="xbrli:item" />
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<element name="InterestExpenseOnExchangeableNotes" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" nillable="true" id="mx_InterestExpenseOnExchangeableNotes" substitutionGroup="xbrli:item" xbrli:balance="debit" />
<element name="BasicEarningsLossPerCommonShareAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="mx_BasicEarningsLossPerCommonShareAbstract" substitutionGroup="xbrli:item" />
<element name="EarningsPerShareTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="mx_EarningsPerShareTable" substitutionGroup="xbrldt:hypercubeItem" />
<element name="EarningsPerShareLineItems" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="mx_EarningsPerShareLineItems" substitutionGroup="xbrli:item" />
<element name="EmployeeAndNonEmployeeStockOptionMember" type="dtr-types:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="mx_EmployeeAndNonEmployeeStockOptionMember" substitutionGroup="xbrli:item" />
</schema>
