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  <xs:element id="gntx_ShareBasedCompensationArrangementByShareBasedPaymentAwardDiscountRecognizedAsCompensationExpense" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardDiscountRecognizedAsCompensationExpense" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
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  <xs:element id="gntx_AutomotiveMirrorsElectronicsMember" abstract="true" name="AutomotiveMirrorsElectronicsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="gntx_HomeLinkModulesMember" abstract="true" name="HomeLinkModulesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
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  <xs:element id="gntx_PremiumSpeakerProductsMember" abstract="true" name="PremiumSpeakerProductsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
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  <xs:element id="gntx_FireProtectionProductsMember" abstract="true" name="FireProtectionProductsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="gntx_WindowsProductMember" abstract="true" name="WindowsProductMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="gntx_MedicalProductsMember" abstract="true" name="MedicalProductsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="gntx_AftermarketProductsMember" abstract="true" name="AftermarketProductsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="gntx_ConsumerElectronicProductsMember" abstract="true" name="ConsumerElectronicProductsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
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  <xs:element id="gntx_BusinessCombinationRecognizedAssetAcquiredAssetIncludingGoodwill" abstract="false" name="BusinessCombinationRecognizedAssetAcquiredAssetIncludingGoodwill" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
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  <xs:element id="gntx_BusinessCombinationLiabilitiesAssumedOperatingLeaseLiability" abstract="false" name="BusinessCombinationLiabilitiesAssumedOperatingLeaseLiability" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
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</xs:schema>
