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    <link:label id="lab_rdn_MortgageInsuranceSegmentMember_D2848458A9E2155A9716C70F9F263DEE_terseLabel_en-US" xlink:label="lab_rdn_MortgageInsuranceSegmentMember_D2848458A9E2155A9716C70F9F263DEE" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Mortgage segment</link:label>
    <link:label id="lab_rdn_MortgageInsuranceSegmentMember_D2848458A9E2155A9716C70F9F263DEE_label_en-US" xlink:label="lab_rdn_MortgageInsuranceSegmentMember_D2848458A9E2155A9716C70F9F263DEE" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Mortgage Insurance Segment [Member]</link:label>
    <link:label id="lab_rdn_MortgageInsuranceSegmentMember_D2848458A9E2155A9716C70F9F263DEE_documentation_en-US" xlink:label="lab_rdn_MortgageInsuranceSegmentMember_D2848458A9E2155A9716C70F9F263DEE" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Mortgage Insurance Segment</link:label>
    <link:loc xlink:href="rdn-20200331.xsd#rdn_MortgageInsuranceSegmentMember" xlink:label="loc_rdn_MortgageInsuranceSegmentMember_D2848458A9E2155A9716C70F9F263DEE" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_rdn_MortgageInsuranceSegmentMember_D2848458A9E2155A9716C70F9F263DEE" xlink:to="lab_rdn_MortgageInsuranceSegmentMember_D2848458A9E2155A9716C70F9F263DEE" xlink:type="arc" />
    <link:label id="lab_rdn_MortgageandRealEstateServicesSegmentMember_16F07BE1B8C7C00BFA78C70F9F27BBFD_terseLabel_en-US" xlink:label="lab_rdn_MortgageandRealEstateServicesSegmentMember_16F07BE1B8C7C00BFA78C70F9F27BBFD" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Real Estate segment</link:label>
    <link:label id="lab_rdn_MortgageandRealEstateServicesSegmentMember_16F07BE1B8C7C00BFA78C70F9F27BBFD_label_en-US" xlink:label="lab_rdn_MortgageandRealEstateServicesSegmentMember_16F07BE1B8C7C00BFA78C70F9F27BBFD" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Mortgage and Real Estate Services Segment [Member]</link:label>
    <link:label id="lab_rdn_MortgageandRealEstateServicesSegmentMember_16F07BE1B8C7C00BFA78C70F9F27BBFD_documentation_en-US" xlink:label="lab_rdn_MortgageandRealEstateServicesSegmentMember_16F07BE1B8C7C00BFA78C70F9F27BBFD" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Mortgage and Real Estate Services Segment</link:label>
    <link:loc xlink:href="rdn-20200331.xsd#rdn_MortgageandRealEstateServicesSegmentMember" xlink:label="loc_rdn_MortgageandRealEstateServicesSegmentMember_16F07BE1B8C7C00BFA78C70F9F27BBFD" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_rdn_MortgageandRealEstateServicesSegmentMember_16F07BE1B8C7C00BFA78C70F9F27BBFD" xlink:to="lab_rdn_MortgageandRealEstateServicesSegmentMember_16F07BE1B8C7C00BFA78C70F9F27BBFD" xlink:type="arc" />
    <link:label id="lab_rdn_AllOtheractivitiessegmentMember_BC96E84C41A4AFF2845BC70F9F27FC05_terseLabel_en-US" xlink:label="lab_rdn_AllOtheractivitiessegmentMember_BC96E84C41A4AFF2845BC70F9F27FC05" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">All Other activities segment</link:label>
    <link:label id="lab_rdn_AllOtheractivitiessegmentMember_BC96E84C41A4AFF2845BC70F9F27FC05_label_en-US" xlink:label="lab_rdn_AllOtheractivitiessegmentMember_BC96E84C41A4AFF2845BC70F9F27FC05" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">All Other activities segment [Member]</link:label>
    <link:label id="lab_rdn_AllOtheractivitiessegmentMember_BC96E84C41A4AFF2845BC70F9F27FC05_documentation_en-US" xlink:label="lab_rdn_AllOtheractivitiessegmentMember_BC96E84C41A4AFF2845BC70F9F27FC05" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">All Other activities segment [Member]</link:label>
    <link:loc xlink:href="rdn-20200331.xsd#rdn_AllOtheractivitiessegmentMember" xlink:label="loc_rdn_AllOtheractivitiessegmentMember_BC96E84C41A4AFF2845BC70F9F27FC05" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_rdn_AllOtheractivitiessegmentMember_BC96E84C41A4AFF2845BC70F9F27FC05" xlink:to="lab_rdn_AllOtheractivitiessegmentMember_BC96E84C41A4AFF2845BC70F9F27FC05" xlink:type="arc" />
    <link:label id="lab_us-gaap_SegmentReportingReconcilingItemForOperatingProfitLossFromSegmentToConsolidatedLineItems_D02FD95BE534890F25BAC70F9F2735DB_terseLabel_en-US" xlink:label="lab_us-gaap_SegmentReportingReconcilingItemForOperatingProfitLossFromSegmentToConsolidatedLineItems_D02FD95BE534890F25BAC70F9F2735DB" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]</link:label>
    <link:label id="lab_us-gaap_SegmentReportingReconcilingItemForOperatingProfitLossFromSegmentToConsolidatedLineItems_D02FD95BE534890F25BAC70F9F2735DB_label_en-US" xlink:label="lab_us-gaap_SegmentReportingReconcilingItemForOperatingProfitLossFromSegmentToConsolidatedLineItems_D02FD95BE534890F25BAC70F9F2735DB" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SegmentReportingReconcilingItemForOperatingProfitLossFromSegmentToConsolidatedLineItems" xlink:label="loc_us-gaap_SegmentReportingReconcilingItemForOperatingProfitLossFromSegmentToConsolidatedLineItems_D02FD95BE534890F25BAC70F9F2735DB" xlink:type="locator" />
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    <link:label id="lab_rdn_TotalOperatingExpensesAllocatedtoSubsidiariesFromParentCompany_2FB94F3FE42DE6CB6776C70F9F272BAD_terseLabel_en-US" xlink:label="lab_rdn_TotalOperatingExpensesAllocatedtoSubsidiariesFromParentCompany_2FB94F3FE42DE6CB6776C70F9F272BAD" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Total Operating Expenses Allocated to Subsidiaries From Parent Company</link:label>
    <link:label id="lab_rdn_TotalOperatingExpensesAllocatedtoSubsidiariesFromParentCompany_2FB94F3FE42DE6CB6776C70F9F272BAD_label_en-US" xlink:label="lab_rdn_TotalOperatingExpensesAllocatedtoSubsidiariesFromParentCompany_2FB94F3FE42DE6CB6776C70F9F272BAD" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Total Operating Expenses Allocated to Subsidiaries From Parent Company</link:label>
    <link:label id="lab_rdn_TotalOperatingExpensesAllocatedtoSubsidiariesFromParentCompany_2FB94F3FE42DE6CB6776C70F9F272BAD_documentation_en-US" xlink:label="lab_rdn_TotalOperatingExpensesAllocatedtoSubsidiariesFromParentCompany_2FB94F3FE42DE6CB6776C70F9F272BAD" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">The amount of operating expenses (excluding interest expense) that is allocated to a segment from the Parent company.</link:label>
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    <link:label id="lab_us-gaap_Depreciation_1F6D39BD1C7CC3FB15D9C70F9F27954F_terseLabel_en-US" xlink:label="lab_us-gaap_Depreciation_1F6D39BD1C7CC3FB15D9C70F9F27954F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Depreciation</link:label>
    <link:label id="lab_us-gaap_Depreciation_1F6D39BD1C7CC3FB15D9C70F9F27954F_label_en-US" xlink:label="lab_us-gaap_Depreciation_1F6D39BD1C7CC3FB15D9C70F9F27954F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Depreciation</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_Depreciation" xlink:label="loc_us-gaap_Depreciation_1F6D39BD1C7CC3FB15D9C70F9F27954F" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_Depreciation_1F6D39BD1C7CC3FB15D9C70F9F27954F" xlink:to="lab_us-gaap_Depreciation_1F6D39BD1C7CC3FB15D9C70F9F27954F" xlink:type="arc" />
    <link:label id="lab_rdn_OperatingIncomeLossPreTaxNonGAAP_2FF85C14189B72DAC1D3C70F9F2833B1_terseLabel_en-US" xlink:label="lab_rdn_OperatingIncomeLossPreTaxNonGAAP_2FF85C14189B72DAC1D3C70F9F2833B1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Adjusted pretax operating income (loss)</link:label>
    <link:label id="lab_rdn_OperatingIncomeLossPreTaxNonGAAP_2FF85C14189B72DAC1D3C70F9F2833B1_label_en-US" xlink:label="lab_rdn_OperatingIncomeLossPreTaxNonGAAP_2FF85C14189B72DAC1D3C70F9F2833B1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Operating Income (Loss) Pre-Tax Non-GAAP</link:label>
    <link:label id="lab_rdn_OperatingIncomeLossPreTaxNonGAAP_2FF85C14189B72DAC1D3C70F9F2833B1_documentation_en-US" xlink:label="lab_rdn_OperatingIncomeLossPreTaxNonGAAP_2FF85C14189B72DAC1D3C70F9F2833B1" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">This concept represents the adjusted pre-tax operating income (loss) for segment reporting (non GAAP) and only includes the revenue and expense items that management considers in assessing the performance of the segment businesses.</link:label>
    <link:loc xlink:href="rdn-20200331.xsd#rdn_OperatingIncomeLossPreTaxNonGAAP" xlink:label="loc_rdn_OperatingIncomeLossPreTaxNonGAAP_2FF85C14189B72DAC1D3C70F9F2833B1" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_rdn_OperatingIncomeLossPreTaxNonGAAP_2FF85C14189B72DAC1D3C70F9F2833B1" xlink:to="lab_rdn_OperatingIncomeLossPreTaxNonGAAP_2FF85C14189B72DAC1D3C70F9F2833B1" xlink:type="arc" />
    <link:label id="lab_rdn_NetGainsLossesonInvestmentsandOtherFinancialInstruments_A8E835CDA0EDC6292B8CC70F9F284AA1_terseLabel_en-US" xlink:label="lab_rdn_NetGainsLossesonInvestmentsandOtherFinancialInstruments_A8E835CDA0EDC6292B8CC70F9F284AA1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Net gains (losses) on investments and other financial instruments</link:label>
    <link:label id="lab_rdn_NetGainsLossesonInvestmentsandOtherFinancialInstruments_A8E835CDA0EDC6292B8CC70F9F284AA1_label_en-US" xlink:label="lab_rdn_NetGainsLossesonInvestmentsandOtherFinancialInstruments_A8E835CDA0EDC6292B8CC70F9F284AA1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Net Gains (Losses) on Investments and Other Financial Instruments</link:label>
    <link:label id="lab_rdn_NetGainsLossesonInvestmentsandOtherFinancialInstruments_A8E835CDA0EDC6292B8CC70F9F284AA1_documentation_en-US" xlink:label="lab_rdn_NetGainsLossesonInvestmentsandOtherFinancialInstruments_A8E835CDA0EDC6292B8CC70F9F284AA1" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">This concept represents the gains and losses on investments and other financial instruments for the period excluding the impact of changes in the present value of insurance claims and recoveries on insured credit derivatives and VIEs, based on the company's ongoing insurance loss monitoring, which are a component of segment expenses. Also includes other than temporarily impaired losses recognized in earnings.</link:label>
    <link:loc xlink:href="rdn-20200331.xsd#rdn_NetGainsLossesonInvestmentsandOtherFinancialInstruments" xlink:label="loc_rdn_NetGainsLossesonInvestmentsandOtherFinancialInstruments_A8E835CDA0EDC6292B8CC70F9F284AA1" xlink:type="locator" />
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    <link:label id="lab_rdn_IncreaseDecreaseinGoodwillandIntangibleAssets_5545CEDF45F4F7A38CE4C70F9F28482C_negatedLabel_en-US" xlink:label="lab_rdn_IncreaseDecreaseinGoodwillandIntangibleAssets_5545CEDF45F4F7A38CE4C70F9F28482C" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Amortization and impairment of other acquired intangible assets</link:label>
    <link:label id="lab_rdn_IncreaseDecreaseinGoodwillandIntangibleAssets_5545CEDF45F4F7A38CE4C70F9F28482C_label_en-US" xlink:label="lab_rdn_IncreaseDecreaseinGoodwillandIntangibleAssets_5545CEDF45F4F7A38CE4C70F9F28482C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Increase (Decrease) in Goodwill and Intangible Assets</link:label>
    <link:label id="lab_rdn_IncreaseDecreaseinGoodwillandIntangibleAssets_5545CEDF45F4F7A38CE4C70F9F28482C_documentation_en-US" xlink:label="lab_rdn_IncreaseDecreaseinGoodwillandIntangibleAssets_5545CEDF45F4F7A38CE4C70F9F28482C" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">The increase (decrease) during the reporting period in goodwill and intangible assets which includes amortization, impairment, etc.</link:label>
    <link:loc xlink:href="rdn-20200331.xsd#rdn_IncreaseDecreaseinGoodwillandIntangibleAssets" xlink:label="loc_rdn_IncreaseDecreaseinGoodwillandIntangibleAssets_5545CEDF45F4F7A38CE4C70F9F28482C" xlink:type="locator" />
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    <link:label id="lab_us-gaap_ImpairmentOfLongLivedAssetsHeldForUse_28E9763538425CF71C7DC70F9F281526_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_ImpairmentOfLongLivedAssetsHeldForUse_28E9763538425CF71C7DC70F9F281526" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US">Impairment of other long-lived assets and other-non-operating items</link:label>
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ImpairmentOfLongLivedAssetsHeldForUse" xlink:label="loc_us-gaap_ImpairmentOfLongLivedAssetsHeldForUse_28E9763538425CF71C7DC70F9F281526" xlink:type="locator" />
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    <link:label id="lab_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_48D84E9DD0C9A829B5F6C70F9F289A8D_terseLabel_en-US" xlink:label="lab_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_48D84E9DD0C9A829B5F6C70F9F289A8D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Consolidated pretax income (loss)</link:label>
    <link:label id="lab_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_48D84E9DD0C9A829B5F6C70F9F289A8D_label_en-US" xlink:label="lab_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_48D84E9DD0C9A829B5F6C70F9F289A8D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest</link:label>
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    <link:label id="lab_us-gaap_ScheduleOfGoodwillTable_8689388E560188643753C72554FED7A0_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfGoodwillTable_8689388E560188643753C72554FED7A0" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Schedule of Goodwill [Table]</link:label>
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    <link:label id="lab_us-gaap_GoodwillLineItems_8A1B8CF74DE7D496D46BC72554FF79F0_terseLabel_en-US" xlink:label="lab_us-gaap_GoodwillLineItems_8A1B8CF74DE7D496D46BC72554FF79F0" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Goodwill [Line Items]</link:label>
    <link:label id="lab_us-gaap_GoodwillLineItems_8A1B8CF74DE7D496D46BC72554FF79F0_label_en-US" xlink:label="lab_us-gaap_GoodwillLineItems_8A1B8CF74DE7D496D46BC72554FF79F0" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Goodwill [Line Items]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_GoodwillLineItems" xlink:label="loc_us-gaap_GoodwillLineItems_8A1B8CF74DE7D496D46BC72554FF79F0" xlink:type="locator" />
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    <link:label id="lab_us-gaap_GoodwillRollForward_59E48A8CAC00E29EAE9BC72554FF0948_terseLabel_en-US" xlink:label="lab_us-gaap_GoodwillRollForward_59E48A8CAC00E29EAE9BC72554FF0948" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Goodwill [Roll Forward]</link:label>
    <link:label id="lab_us-gaap_GoodwillRollForward_59E48A8CAC00E29EAE9BC72554FF0948_label_en-US" xlink:label="lab_us-gaap_GoodwillRollForward_59E48A8CAC00E29EAE9BC72554FF0948" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Goodwill [Roll Forward]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_GoodwillRollForward" xlink:label="loc_us-gaap_GoodwillRollForward_59E48A8CAC00E29EAE9BC72554FF0948" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_GoodwillRollForward_59E48A8CAC00E29EAE9BC72554FF0948" xlink:to="lab_us-gaap_GoodwillRollForward_59E48A8CAC00E29EAE9BC72554FF0948" xlink:type="arc" />
    <link:label id="lab_us-gaap_GoodwillGross_D8471ABB05C351768910C72555004F8C_periodStartLabel_en-US" xlink:label="lab_us-gaap_GoodwillGross_D8471ABB05C351768910C72555004F8C" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:type="resource" xml:lang="en-US">Goodwill, Gross, Beginning of Period</link:label>
    <link:label id="lab_us-gaap_GoodwillGross_D8471ABB05C351768910C72555004F8C_label_en-US" xlink:label="lab_us-gaap_GoodwillGross_D8471ABB05C351768910C72555004F8C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Goodwill, Gross</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_GoodwillGross" xlink:label="loc_us-gaap_GoodwillGross_D8471ABB05C351768910C72555004F8C" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_GoodwillGross_D8471ABB05C351768910C72555004F8C" xlink:to="lab_us-gaap_GoodwillGross_D8471ABB05C351768910C72555004F8C" xlink:type="arc" />
    <link:label id="lab_us-gaap_GoodwillAcquiredDuringPeriod_572EFEC8E6AB019DF46FC7255500023D_terseLabel_en-US" xlink:label="lab_us-gaap_GoodwillAcquiredDuringPeriod_572EFEC8E6AB019DF46FC7255500023D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Goodwill, Acquired During Period</link:label>
    <link:label id="lab_us-gaap_GoodwillAcquiredDuringPeriod_572EFEC8E6AB019DF46FC7255500023D_label_en-US" xlink:label="lab_us-gaap_GoodwillAcquiredDuringPeriod_572EFEC8E6AB019DF46FC7255500023D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Goodwill, Acquired During Period</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_GoodwillAcquiredDuringPeriod" xlink:label="loc_us-gaap_GoodwillAcquiredDuringPeriod_572EFEC8E6AB019DF46FC7255500023D" xlink:type="locator" />
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    <link:label id="lab_us-gaap_GoodwillGross_CC03FFE3C0CFEF88FFC9C725550012C4_periodEndLabel_en-US" xlink:label="lab_us-gaap_GoodwillGross_CC03FFE3C0CFEF88FFC9C725550012C4" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:type="resource" xml:lang="en-US">Goodwill, Gross, End of Period</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_GoodwillGross" xlink:label="loc_us-gaap_GoodwillGross_CC03FFE3C0CFEF88FFC9C725550012C4" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_GoodwillGross_CC03FFE3C0CFEF88FFC9C725550012C4" xlink:to="lab_us-gaap_GoodwillGross_CC03FFE3C0CFEF88FFC9C725550012C4" xlink:type="arc" />
    <link:label id="lab_us-gaap_GoodwillImpairedAccumulatedImpairmentLoss_52BDA54E4F9CC57AE97DC7255500F56D_negatedPeriodStartLabel_en-US" xlink:label="lab_us-gaap_GoodwillImpairedAccumulatedImpairmentLoss_52BDA54E4F9CC57AE97DC7255500F56D" xlink:role="http://www.xbrl.org/2009/role/negatedPeriodStartLabel" xlink:type="resource" xml:lang="en-US">Goodwill, Impaired, Accumulated Impairment Loss, Beginning of Period</link:label>
    <link:label id="lab_us-gaap_GoodwillImpairedAccumulatedImpairmentLoss_52BDA54E4F9CC57AE97DC7255500F56D_label_en-US" xlink:label="lab_us-gaap_GoodwillImpairedAccumulatedImpairmentLoss_52BDA54E4F9CC57AE97DC7255500F56D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Goodwill, Impaired, Accumulated Impairment Loss</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_GoodwillImpairedAccumulatedImpairmentLoss" xlink:label="loc_us-gaap_GoodwillImpairedAccumulatedImpairmentLoss_52BDA54E4F9CC57AE97DC7255500F56D" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_GoodwillImpairedAccumulatedImpairmentLoss_52BDA54E4F9CC57AE97DC7255500F56D" xlink:to="lab_us-gaap_GoodwillImpairedAccumulatedImpairmentLoss_52BDA54E4F9CC57AE97DC7255500F56D" xlink:type="arc" />
    <link:label id="lab_us-gaap_GoodwillImpairmentLoss_E3C4490A95E1914BA216C787384F55F6_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_GoodwillImpairmentLoss_E3C4490A95E1914BA216C787384F55F6" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US">Goodwill, Impairment Loss</link:label>
    <link:label id="lab_us-gaap_GoodwillImpairmentLoss_E3C4490A95E1914BA216C787384F55F6_label_en-US" xlink:label="lab_us-gaap_GoodwillImpairmentLoss_E3C4490A95E1914BA216C787384F55F6" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Goodwill, Impairment Loss</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_GoodwillImpairmentLoss" xlink:label="loc_us-gaap_GoodwillImpairmentLoss_E3C4490A95E1914BA216C787384F55F6" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_GoodwillImpairmentLoss_E3C4490A95E1914BA216C787384F55F6" xlink:to="lab_us-gaap_GoodwillImpairmentLoss_E3C4490A95E1914BA216C787384F55F6" xlink:type="arc" />
    <link:label id="lab_us-gaap_GoodwillImpairedAccumulatedImpairmentLoss_64A1DE96DB17543CF650C7255500CBB5_negatedPeriodEndLabel_en-US" xlink:label="lab_us-gaap_GoodwillImpairedAccumulatedImpairmentLoss_64A1DE96DB17543CF650C7255500CBB5" xlink:role="http://www.xbrl.org/2009/role/negatedPeriodEndLabel" xlink:type="resource" xml:lang="en-US">Goodwill, Impaired, Accumulated Impairment Loss, End of Period</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_GoodwillImpairedAccumulatedImpairmentLoss" xlink:label="loc_us-gaap_GoodwillImpairedAccumulatedImpairmentLoss_64A1DE96DB17543CF650C7255500CBB5" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_GoodwillImpairedAccumulatedImpairmentLoss_64A1DE96DB17543CF650C7255500CBB5" xlink:to="lab_us-gaap_GoodwillImpairedAccumulatedImpairmentLoss_64A1DE96DB17543CF650C7255500CBB5" xlink:type="arc" />
    <link:label id="lab_us-gaap_Goodwill_154AD55F73C0C185E998C7255500A31D_totalLabel_en-US" xlink:label="lab_us-gaap_Goodwill_154AD55F73C0C185E998C7255500A31D" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Goodwill, Net</link:label>
    <link:label id="lab_us-gaap_Goodwill_154AD55F73C0C185E998C7255500A31D_label_en-US" xlink:label="lab_us-gaap_Goodwill_154AD55F73C0C185E998C7255500A31D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Goodwill</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_Goodwill" xlink:label="loc_us-gaap_Goodwill_154AD55F73C0C185E998C7255500A31D" xlink:type="locator" />
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    <link:label id="lab_rdn_DefaultToClaimRateDetailAbstract_666409169DAE4CEBFAEDA21C2C032339_label_en-US" xlink:label="lab_rdn_DefaultToClaimRateDetailAbstract_666409169DAE4CEBFAEDA21C2C032339" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Default To Claim Rate Detail [Abstract]</link:label>
    <link:label id="lab_rdn_DefaultToClaimRateDetailAbstract_666409169DAE4CEBFAEDA21C2C032339_documentation_en-US" xlink:label="lab_rdn_DefaultToClaimRateDetailAbstract_666409169DAE4CEBFAEDA21C2C032339" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Default To Claim Rate Detail [Abstract]</link:label>
    <link:loc xlink:href="rdn-20200331.xsd#rdn_DefaultToClaimRateDetailAbstract" xlink:label="loc_rdn_DefaultToClaimRateDetailAbstract_666409169DAE4CEBFAEDA21C2C032339" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_rdn_DefaultToClaimRateDetailAbstract_666409169DAE4CEBFAEDA21C2C032339" xlink:to="lab_rdn_DefaultToClaimRateDetailAbstract_666409169DAE4CEBFAEDA21C2C032339" xlink:type="arc" />
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    <link:label id="lab_srt_ProductOrServiceAxis_647AF7654D2296B2C485A21C2C03443C_label_en-US" xlink:label="lab_srt_ProductOrServiceAxis_647AF7654D2296B2C485A21C2C03443C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Product and Service [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_ProductOrServiceAxis" xlink:label="loc_srt_ProductOrServiceAxis_647AF7654D2296B2C485A21C2C03443C" xlink:type="locator" />
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    <link:label id="lab_srt_ProductsAndServicesDomain_2656A91B77A8D4EB99E8A21C2C0345BF_terseLabel_en-US" xlink:label="lab_srt_ProductsAndServicesDomain_2656A91B77A8D4EB99E8A21C2C0345BF" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Product and Service [Domain]</link:label>
    <link:label id="lab_srt_ProductsAndServicesDomain_2656A91B77A8D4EB99E8A21C2C0345BF_label_en-US" xlink:label="lab_srt_ProductsAndServicesDomain_2656A91B77A8D4EB99E8A21C2C0345BF" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Product and Service [Domain]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_ProductsAndServicesDomain" xlink:label="loc_srt_ProductsAndServicesDomain_2656A91B77A8D4EB99E8A21C2C0345BF" xlink:type="locator" />
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    <link:label id="lab_rdn_PrimaryMortgageProductMember_68F0401FC682FC6CEA05A21C2C0424D6_terseLabel_en-US" xlink:label="lab_rdn_PrimaryMortgageProductMember_68F0401FC682FC6CEA05A21C2C0424D6" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Primary Mortgage Product</link:label>
    <link:label id="lab_rdn_PrimaryMortgageProductMember_68F0401FC682FC6CEA05A21C2C0424D6_label_en-US" xlink:label="lab_rdn_PrimaryMortgageProductMember_68F0401FC682FC6CEA05A21C2C0424D6" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Primary Mortgage Product [Member]</link:label>
    <link:label id="lab_rdn_PrimaryMortgageProductMember_68F0401FC682FC6CEA05A21C2C0424D6_documentation_en-US" xlink:label="lab_rdn_PrimaryMortgageProductMember_68F0401FC682FC6CEA05A21C2C0424D6" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">This represents the primary mortgage product.</link:label>
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    <link:label id="lab_us-gaap_StatementBusinessSegmentsAxis_B03A18250BBA837DB303A21C2C0411E1_terseLabel_en-US" xlink:label="lab_us-gaap_StatementBusinessSegmentsAxis_B03A18250BBA837DB303A21C2C0411E1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Segments [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StatementBusinessSegmentsAxis" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_B03A18250BBA837DB303A21C2C0411E1" xlink:type="locator" />
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    <link:label id="lab_rdn_DefaultToClaimRateEstimateGrossForNewDefaults_D1B38A80EDE335C8443DA21C2C05085B_terseLabel_en-US" xlink:label="lab_rdn_DefaultToClaimRateEstimateGrossForNewDefaults_D1B38A80EDE335C8443DA21C2C05085B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Default To Claim Rate Estimate, Gross, For New Defaults</link:label>
    <link:label id="lab_rdn_DefaultToClaimRateEstimateGrossForNewDefaults_D1B38A80EDE335C8443DA21C2C05085B_label_en-US" xlink:label="lab_rdn_DefaultToClaimRateEstimateGrossForNewDefaults_D1B38A80EDE335C8443DA21C2C05085B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Default To Claim Rate Estimate, Gross, For New Defaults</link:label>
    <link:label id="lab_rdn_DefaultToClaimRateEstimateGrossForNewDefaults_D1B38A80EDE335C8443DA21C2C05085B_documentation_en-US" xlink:label="lab_rdn_DefaultToClaimRateEstimateGrossForNewDefaults_D1B38A80EDE335C8443DA21C2C05085B" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">This concept represents the rate at which newly reported defaulted loans are expected to result in a claim.</link:label>
    <link:loc xlink:href="rdn-20200331.xsd#rdn_DefaultToClaimRateEstimateGrossForNewDefaults" xlink:label="loc_rdn_DefaultToClaimRateEstimateGrossForNewDefaults_D1B38A80EDE335C8443DA21C2C05085B" xlink:type="locator" />
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    <link:label id="lab_us-gaap_InsuranceLossReservesAbstract_769012186DCE4B7BC9277197C112D943_label_en-US" xlink:label="lab_us-gaap_InsuranceLossReservesAbstract_1B03BC1D3035529DA46F7672FC9C9A65" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Insurance Loss Reserves [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_InsuranceLossReservesAbstract" xlink:label="loc_us-gaap_InsuranceLossReservesAbstract_1B03BC1D3035529DA46F7672FC9C9A65" xlink:type="locator" />
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    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OperatingLeaseWeightedAverageDiscountRatePercent_C15B69EE8CCA86FB4824CD7675269B30" xlink:to="lab_us-gaap_OperatingLeaseWeightedAverageDiscountRatePercent_C15B69EE8CCA86FB4824CD7675269B30" xlink:type="arc" />
    <link:label id="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear_3CD3B7513DEE1058CE39CD7675262D26_terseLabel_en-US" xlink:label="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear_3CD3B7513DEE1058CE39CD7675262D26" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Remaining maturities of lease liabilities for 2020</link:label>
    <link:label id="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear_3CD3B7513DEE1058CE39CD7675262D26_label_en-US" xlink:label="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear_3CD3B7513DEE1058CE39CD7675262D26" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Lessee, Operating Lease, Liability, Payments, Remainder of Fiscal Year</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear_3CD3B7513DEE1058CE39CD7675262D26" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear_3CD3B7513DEE1058CE39CD7675262D26" xlink:to="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear_3CD3B7513DEE1058CE39CD7675262D26" xlink:type="arc" />
    <link:label id="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths_153A13E45CE5D6DCA481CD767527DB9F_terseLabel_en-US" xlink:label="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths_153A13E45CE5D6DCA481CD767527DB9F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Remaining maturities of lease liabilities for 2021</link:label>
    <link:label id="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths_153A13E45CE5D6DCA481CD767527DB9F_label_en-US" xlink:label="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths_153A13E45CE5D6DCA481CD767527DB9F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Lessee, Operating Lease, Liability, Payments, Due Next Twelve Months</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths_153A13E45CE5D6DCA481CD767527DB9F" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths_153A13E45CE5D6DCA481CD767527DB9F" xlink:to="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths_153A13E45CE5D6DCA481CD767527DB9F" xlink:type="arc" />
    <link:label id="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo_CAE6AC19645467BFE67DCD76752716EA_terseLabel_en-US" xlink:label="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo_CAE6AC19645467BFE67DCD76752716EA" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Remaining maturities of lease liabilities for 2022</link:label>
    <link:label id="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo_CAE6AC19645467BFE67DCD76752716EA_label_en-US" xlink:label="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo_CAE6AC19645467BFE67DCD76752716EA" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Lessee, Operating Lease, Liability, Payments, Due Year Two</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo_CAE6AC19645467BFE67DCD76752716EA" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo_CAE6AC19645467BFE67DCD76752716EA" xlink:to="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo_CAE6AC19645467BFE67DCD76752716EA" xlink:type="arc" />
    <link:label id="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree_1110E172DC87A5BCFE98CD767527C48F_terseLabel_en-US" xlink:label="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree_1110E172DC87A5BCFE98CD767527C48F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Remaining maturities of lease liabilities for 2023</link:label>
    <link:label id="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree_1110E172DC87A5BCFE98CD767527C48F_label_en-US" xlink:label="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree_1110E172DC87A5BCFE98CD767527C48F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Lessee, Operating Lease, Liability, Payments, Due Year Three</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree_1110E172DC87A5BCFE98CD767527C48F" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree_1110E172DC87A5BCFE98CD767527C48F" xlink:to="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree_1110E172DC87A5BCFE98CD767527C48F" xlink:type="arc" />
    <link:label id="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFour_242A2F6731A8F17C1A6CCD7675271913_terseLabel_en-US" xlink:label="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFour_242A2F6731A8F17C1A6CCD7675271913" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Remaining maturities of lease liabilities for 2024</link:label>
    <link:label id="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFour_242A2F6731A8F17C1A6CCD7675271913_label_en-US" xlink:label="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFour_242A2F6731A8F17C1A6CCD7675271913" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Lessee, Operating Lease, Liability, Payments, Due Year Four</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFour" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFour_242A2F6731A8F17C1A6CCD7675271913" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFour_242A2F6731A8F17C1A6CCD7675271913" xlink:to="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFour_242A2F6731A8F17C1A6CCD7675271913" xlink:type="arc" />
    <link:label id="lab_rdn_LesseeOperatingLeaseLiabilityPaymentsDueYearFiveandThereafter_150319036725BC683CCECD7675278FBB_terseLabel_en-US" xlink:label="lab_rdn_LesseeOperatingLeaseLiabilityPaymentsDueYearFiveandThereafter_150319036725BC683CCECD7675278FBB" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Remaining maturities of lease liabilities for 2025 and thereafter</link:label>
    <link:label id="lab_rdn_LesseeOperatingLeaseLiabilityPaymentsDueYearFiveandThereafter_150319036725BC683CCECD7675278FBB_label_en-US" xlink:label="lab_rdn_LesseeOperatingLeaseLiabilityPaymentsDueYearFiveandThereafter_150319036725BC683CCECD7675278FBB" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Lessee, Operating Lease, Liability, Payments, Due Year Five and Thereafter</link:label>
    <link:label id="lab_rdn_LesseeOperatingLeaseLiabilityPaymentsDueYearFiveandThereafter_150319036725BC683CCECD7675278FBB_documentation_en-US" xlink:label="lab_rdn_LesseeOperatingLeaseLiabilityPaymentsDueYearFiveandThereafter_150319036725BC683CCECD7675278FBB" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Lessee, Operating Lease, Liability, Payments, Due Year Five and Thereafter</link:label>
    <link:loc xlink:href="rdn-20200331.xsd#rdn_LesseeOperatingLeaseLiabilityPaymentsDueYearFiveandThereafter" xlink:label="loc_rdn_LesseeOperatingLeaseLiabilityPaymentsDueYearFiveandThereafter_150319036725BC683CCECD7675278FBB" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_rdn_LesseeOperatingLeaseLiabilityPaymentsDueYearFiveandThereafter_150319036725BC683CCECD7675278FBB" xlink:to="lab_rdn_LesseeOperatingLeaseLiabilityPaymentsDueYearFiveandThereafter_150319036725BC683CCECD7675278FBB" xlink:type="arc" />
    <link:label id="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_967196892ABC41D38D07CD767527AC9F_totalLabel_en-US" xlink:label="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_967196892ABC41D38D07CD767527AC9F" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Total lease payments</link:label>
    <link:label id="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_967196892ABC41D38D07CD767527AC9F_label_en-US" xlink:label="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_967196892ABC41D38D07CD767527AC9F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Lessee, Operating Lease, Liability, Payments, Due</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_967196892ABC41D38D07CD767527AC9F" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_967196892ABC41D38D07CD767527AC9F" xlink:to="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_967196892ABC41D38D07CD767527AC9F" xlink:type="arc" />
    <link:label id="lab_rdn_LesseeOperatingLeaseImputedInterest_C6B0A752E5D457DF3802CD767527A524_negatedTerseLabel_en-US" xlink:label="lab_rdn_LesseeOperatingLeaseImputedInterest_C6B0A752E5D457DF3802CD767527A524" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US">Less: Imputed interest</link:label>
    <link:label id="lab_rdn_LesseeOperatingLeaseImputedInterest_C6B0A752E5D457DF3802CD767527A524_label_en-US" xlink:label="lab_rdn_LesseeOperatingLeaseImputedInterest_C6B0A752E5D457DF3802CD767527A524" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Lessee, Operating Lease, Imputed Interest</link:label>
    <link:label id="lab_rdn_LesseeOperatingLeaseImputedInterest_C6B0A752E5D457DF3802CD767527A524_documentation_en-US" xlink:label="lab_rdn_LesseeOperatingLeaseImputedInterest_C6B0A752E5D457DF3802CD767527A524" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Lessee, Operating Lease, Imputed Interest</link:label>
    <link:loc xlink:href="rdn-20200331.xsd#rdn_LesseeOperatingLeaseImputedInterest" xlink:label="loc_rdn_LesseeOperatingLeaseImputedInterest_C6B0A752E5D457DF3802CD767527A524" xlink:type="locator" />
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    <link:label id="lab_us-gaap_ScheduleOfAvailableForSaleSecuritiesTable_94C240BCB139DB361B0EE6BA7A5E4E33_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfAvailableForSaleSecuritiesTable_94C240BCB139DB361B0EE6BA7A5E4E33" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Schedule of Available-for-sale Securities [Table]</link:label>
    <link:label id="lab_us-gaap_ScheduleOfAvailableForSaleSecuritiesTable_94C240BCB139DB361B0EE6BA7A5E4E33_label_en-US" xlink:label="lab_us-gaap_ScheduleOfAvailableForSaleSecuritiesTable_94C240BCB139DB361B0EE6BA7A5E4E33" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule of Available-for-sale Securities [Table]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ScheduleOfAvailableForSaleSecuritiesTable" xlink:label="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesTable_94C240BCB139DB361B0EE6BA7A5E4E33" xlink:type="locator" />
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    <link:label id="lab_rdn_OtherThanTemporaryImpairmentLossAxis_84D3CD8E3AA89DE1F467E6BA7A5F79A7_documentation_en-US" xlink:label="lab_rdn_OtherThanTemporaryImpairmentLossAxis_84D3CD8E3AA89DE1F467E6BA7A5F79A7" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Other Than Temporary Impairment Loss [Axis]</link:label>
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    <link:label id="lab_rdn_OTTIRecognizedinEarningsDuetoIntenttoSellMember_56C8ED683BC560E3B4D1E6BA7A5FD4AD_terseLabel_en-US" xlink:label="lab_rdn_OTTIRecognizedinEarningsDuetoIntenttoSellMember_56C8ED683BC560E3B4D1E6BA7A5FD4AD" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">OTTI Recognized in Earnings Due to Intent to Sell</link:label>
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AssetsHeldForSaleNotPartOfDisposalGroupOther" xlink:label="loc_us-gaap_AssetsHeldForSaleNotPartOfDisposalGroupOther_67765A1FCDECECBA5F92C8D065719DA2" xlink:type="locator" />
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    <link:label id="lab_us-gaap_OtherAssetsMiscellaneous_37EAB9976D87BE7CA8E2C8D0659092F2_label_en-US" xlink:label="lab_us-gaap_OtherAssetsMiscellaneous_37EAB9976D87BE7CA8E2C8D0659092F2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other Assets, Miscellaneous</link:label>
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    <link:label id="lab_us-gaap_OtherAssets_A08B22DEAA89FAA07A22C8D0659D6F75_terseLabel_en-US" xlink:label="lab_us-gaap_OtherAssets_A08B22DEAA89FAA07A22C8D0659D6F75" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Other Assets</link:label>
    <link:label id="lab_us-gaap_OtherAssets_A08B22DEAA89FAA07A22C8D0659D6F75_label_en-US" xlink:label="lab_us-gaap_OtherAssets_A08B22DEAA89FAA07A22C8D0659D6F75" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other Assets</link:label>
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    <link:label id="lab_us-gaap_IncomeStatementAbstract_18299ED408C36F3FE57AE6BA7AD8FF04_label_en-US" xlink:label="lab_us-gaap_IncomeStatementAbstract_18299ED408C36F3FE57AE6BA7AD8FF04" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Income Statement [Abstract]</link:label>
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    <link:label id="lab_us-gaap_RevenuesAbstract_5A12F68C1311C7B22801E6BA7AD9903A_label_en-US" xlink:label="lab_us-gaap_RevenuesAbstract_5A12F68C1311C7B22801E6BA7AD9903A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Revenues [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RevenuesAbstract" xlink:label="loc_us-gaap_RevenuesAbstract_5A12F68C1311C7B22801E6BA7AD9903A" xlink:type="locator" />
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StockholdersEquity" xlink:label="loc_us-gaap_StockholdersEquity_791EFE39027F144BE658CB00AEBBC363" xlink:type="locator" />
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    <link:label id="lab_us-gaap_LiabilitiesAndStockholdersEquity_09F5CFD0474A092B9A2FCB00AEBCE5A3_label_en-US" xlink:label="lab_us-gaap_LiabilitiesAndStockholdersEquity_09F5CFD0474A092B9A2FCB00AEBCE5A3" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Liabilities and Equity</link:label>
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    <link:label id="lab_rdn_RiskToCapitalLineItemsLineItems_39C7432C080F9046572AEABC189613EF_documentation_en-US" xlink:label="lab_rdn_RiskToCapitalLineItemsLineItems_39C7432C080F9046572AEABC189613EF" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Risk to Capital Line Items [Line Items]</link:label>
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    <link:label id="lab_rdn_NetRiskInForce_E5CAF9FE280BFDA87E1DEABC1897A83A_documentation_en-US" xlink:label="lab_rdn_NetRiskInForce_E5CAF9FE280BFDA87E1DEABC1897A83A" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">This concept represents the risk in force (an estimate of the maximum loss exposure that an entity has at any point in time) net of risk ceded through reinsurance contracts and net of risk in force on defaulted loans.</link:label>
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    <link:label id="lab_rdn_NonAssetBackedSecurityInvestmentsContractualMaturitiesMember_5A618CB615348E8B2F05E6BA7A407B9E_terseLabel_en-US" xlink:label="lab_rdn_NonAssetBackedSecurityInvestmentsContractualMaturitiesMember_5A618CB615348E8B2F05E6BA7A407B9E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Non asset-backed securities</link:label>
    <link:label id="lab_rdn_NonAssetBackedSecurityInvestmentsContractualMaturitiesMember_5A618CB615348E8B2F05E6BA7A407B9E_label_en-US" xlink:label="lab_rdn_NonAssetBackedSecurityInvestmentsContractualMaturitiesMember_5A618CB615348E8B2F05E6BA7A407B9E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Non Asset Backed Security Investments, Contractual Maturities [Member]</link:label>
    <link:label id="lab_rdn_NonAssetBackedSecurityInvestmentsContractualMaturitiesMember_5A618CB615348E8B2F05E6BA7A407B9E_documentation_en-US" xlink:label="lab_rdn_NonAssetBackedSecurityInvestmentsContractualMaturitiesMember_5A618CB615348E8B2F05E6BA7A407B9E" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Non Asset Backed Security Investments, Contractual Maturities is used to capture all fixed maturity investments excluding Asset Backed Securities (which have no single maturity dates) in the schedule of contractual maturities of fixed maturity investments. (excludes RMBS, CMBS and other ABS)</link:label>
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    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_rdn_NonAssetBackedSecurityInvestmentsContractualMaturitiesMember_5A618CB615348E8B2F05E6BA7A407B9E" xlink:to="lab_rdn_NonAssetBackedSecurityInvestmentsContractualMaturitiesMember_5A618CB615348E8B2F05E6BA7A407B9E" xlink:type="arc" />
    <link:label id="lab_rdn_TotalDebtSecuritiesLineItems_AD2301B7359A428B1F8DE6BA7A4007FA_terseLabel_en-US" xlink:label="lab_rdn_TotalDebtSecuritiesLineItems_AD2301B7359A428B1F8DE6BA7A4007FA" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Total Debt Securities [Line Items]</link:label>
    <link:label id="lab_rdn_TotalDebtSecuritiesLineItems_AD2301B7359A428B1F8DE6BA7A4007FA_label_en-US" xlink:label="lab_rdn_TotalDebtSecuritiesLineItems_AD2301B7359A428B1F8DE6BA7A4007FA" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Total Debt Securities [Line Items]</link:label>
    <link:label id="lab_rdn_TotalDebtSecuritiesLineItems_AD2301B7359A428B1F8DE6BA7A4007FA_documentation_en-US" xlink:label="lab_rdn_TotalDebtSecuritiesLineItems_AD2301B7359A428B1F8DE6BA7A4007FA" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Total Debt Securities [Line Items]</link:label>
    <link:loc xlink:href="rdn-20200331.xsd#rdn_TotalDebtSecuritiesLineItems" xlink:label="loc_rdn_TotalDebtSecuritiesLineItems_AD2301B7359A428B1F8DE6BA7A4007FA" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_rdn_TotalDebtSecuritiesLineItems_AD2301B7359A428B1F8DE6BA7A4007FA" xlink:to="lab_rdn_TotalDebtSecuritiesLineItems_AD2301B7359A428B1F8DE6BA7A4007FA" xlink:type="arc" />
    <link:label id="lab_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAbstract_C3611BF65B5A31DE8355E6BA7A4173C9_terseLabel_en-US" xlink:label="lab_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAbstract_C3611BF65B5A31DE8355E6BA7A4173C9" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Available-for-sale Securities</link:label>
    <link:label id="lab_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAbstract_C3611BF65B5A31DE8355E6BA7A4173C9_label_en-US" xlink:label="lab_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAbstract_C3611BF65B5A31DE8355E6BA7A4173C9" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Available-for-sale Securities, Debt Maturities [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAbstract" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAbstract_C3611BF65B5A31DE8355E6BA7A4173C9" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAbstract_C3611BF65B5A31DE8355E6BA7A4173C9" xlink:to="lab_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAbstract_C3611BF65B5A31DE8355E6BA7A4173C9" xlink:type="arc" />
    <link:label id="lab_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAmortizedCostAbstract_AD7AA4C895D8B57EA09DE6BA7A4178D1_terseLabel_en-US" xlink:label="lab_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAmortizedCostAbstract_AD7AA4C895D8B57EA09DE6BA7A4178D1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Available-for-sale Securities, Amortized Cost</link:label>
    <link:label id="lab_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAmortizedCostAbstract_AD7AA4C895D8B57EA09DE6BA7A4178D1_label_en-US" xlink:label="lab_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAmortizedCostAbstract_AD7AA4C895D8B57EA09DE6BA7A4178D1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Debt Securities, Available-for-sale, Amortized Cost, Fiscal Year Maturity [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAmortizedCostAbstract" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAmortizedCostAbstract_AD7AA4C895D8B57EA09DE6BA7A4178D1" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAmortizedCostAbstract_AD7AA4C895D8B57EA09DE6BA7A4178D1" xlink:to="lab_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAmortizedCostAbstract_AD7AA4C895D8B57EA09DE6BA7A4178D1" xlink:type="arc" />
    <link:label id="lab_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost_91C2693F77D00570B3C7E6BA7A416A5B_terseLabel_en-US" xlink:label="lab_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost_91C2693F77D00570B3C7E6BA7A416A5B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Due in one year or less</link:label>
    <link:label id="lab_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost_91C2693F77D00570B3C7E6BA7A416A5B_label_en-US" xlink:label="lab_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost_91C2693F77D00570B3C7E6BA7A416A5B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, within One Year, Amortized Cost</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost_91C2693F77D00570B3C7E6BA7A416A5B" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost_91C2693F77D00570B3C7E6BA7A416A5B" xlink:to="lab_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost_91C2693F77D00570B3C7E6BA7A416A5B" xlink:type="arc" />
    <link:label id="lab_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost_EDED565C34B6F91B19C0E6BA7A414B97_terseLabel_en-US" xlink:label="lab_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost_EDED565C34B6F91B19C0E6BA7A414B97" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Due after one year through five years</link:label>
    <link:label id="lab_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost_EDED565C34B6F91B19C0E6BA7A414B97_label_en-US" xlink:label="lab_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost_EDED565C34B6F91B19C0E6BA7A414B97" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, after One Through Five Years, Amortized Cost</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost_EDED565C34B6F91B19C0E6BA7A414B97" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost_EDED565C34B6F91B19C0E6BA7A414B97" xlink:to="lab_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost_EDED565C34B6F91B19C0E6BA7A414B97" xlink:type="arc" />
    <link:label id="lab_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost_EC2CAAF0F58EB0814C45E6BA7A424000_terseLabel_en-US" xlink:label="lab_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost_EC2CAAF0F58EB0814C45E6BA7A424000" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Due after five years through ten years</link:label>
    <link:label id="lab_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost_EC2CAAF0F58EB0814C45E6BA7A424000_label_en-US" xlink:label="lab_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost_EC2CAAF0F58EB0814C45E6BA7A424000" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, after Five Through Ten Years, Amortized Cost</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost_EC2CAAF0F58EB0814C45E6BA7A424000" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost_EC2CAAF0F58EB0814C45E6BA7A424000" xlink:to="lab_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost_EC2CAAF0F58EB0814C45E6BA7A424000" xlink:type="arc" />
    <link:label id="lab_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCost_75FCC95F5047DB24B087E6BA7A42AE68_terseLabel_en-US" xlink:label="lab_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCost_75FCC95F5047DB24B087E6BA7A42AE68" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Due after ten years</link:label>
    <link:label id="lab_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCost_75FCC95F5047DB24B087E6BA7A42AE68_label_en-US" xlink:label="lab_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCost_75FCC95F5047DB24B087E6BA7A42AE68" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Debt Securities, Available-for-sale, Allocated and Single Maturity Date, Maturity, after 10 Years, Amortized Cost</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCost" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCost_75FCC95F5047DB24B087E6BA7A42AE68" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCost_75FCC95F5047DB24B087E6BA7A42AE68" xlink:to="lab_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCost_75FCC95F5047DB24B087E6BA7A42AE68" xlink:type="arc" />
    <link:label id="lab_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateAmortizedCost_A6905F5766A888B818BBE6BA7A42D4D4_terseLabel_en-US" xlink:label="lab_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateAmortizedCost_A6905F5766A888B818BBE6BA7A42D4D4" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Fixed-maturity investments available for sale, Maturity, without Single Maturity Date, Amortized Cost</link:label>
    <link:label id="lab_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateAmortizedCost_A6905F5766A888B818BBE6BA7A42D4D4_label_en-US" xlink:label="lab_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateAmortizedCost_A6905F5766A888B818BBE6BA7A42D4D4" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Debt Securities, Available-for-sale, Maturity, without Single Maturity Date, Amortized Cost</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateAmortizedCost" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateAmortizedCost_A6905F5766A888B818BBE6BA7A42D4D4" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateAmortizedCost_A6905F5766A888B818BBE6BA7A42D4D4" xlink:to="lab_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateAmortizedCost_A6905F5766A888B818BBE6BA7A42D4D4" xlink:type="arc" />
    <link:label id="lab_rdn_AvailableforsaleDebtSecuritiesAmortizedCostBasisIncludingLoanedSecurities_70A9802573E97A93CA4EE6BA7A42684C_terseLabel_en-US" xlink:label="lab_rdn_AvailableforsaleDebtSecuritiesAmortizedCostBasisIncludingLoanedSecurities_70A9802573E97A93CA4EE6BA7A42684C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Available-for-sale Debt Securities, Amortized Cost Basis, Including Loaned Securities</link:label>
    <link:loc xlink:href="rdn-20200331.xsd#rdn_AvailableforsaleDebtSecuritiesAmortizedCostBasisIncludingLoanedSecurities" xlink:label="loc_rdn_AvailableforsaleDebtSecuritiesAmortizedCostBasisIncludingLoanedSecurities_70A9802573E97A93CA4EE6BA7A42684C" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_rdn_AvailableforsaleDebtSecuritiesAmortizedCostBasisIncludingLoanedSecurities_70A9802573E97A93CA4EE6BA7A42684C" xlink:to="lab_rdn_AvailableforsaleDebtSecuritiesAmortizedCostBasisIncludingLoanedSecurities_70A9802573E97A93CA4EE6BA7A42684C" xlink:type="arc" />
    <link:label id="lab_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesFairValueAbstract_1725B672E1BF28B439E7E6BA7A432CB6_terseLabel_en-US" xlink:label="lab_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesFairValueAbstract_1725B672E1BF28B439E7E6BA7A432CB6" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Available-for-sale Securities, Fair Value</link:label>
    <link:label id="lab_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesFairValueAbstract_1725B672E1BF28B439E7E6BA7A432CB6_label_en-US" xlink:label="lab_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesFairValueAbstract_1725B672E1BF28B439E7E6BA7A432CB6" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Debt Securities, Available-for-sale, Fair Value, Fiscal Year Maturity [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AvailableForSaleSecuritiesDebtMaturitiesFairValueAbstract" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesFairValueAbstract_1725B672E1BF28B439E7E6BA7A432CB6" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesFairValueAbstract_1725B672E1BF28B439E7E6BA7A432CB6" xlink:to="lab_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesFairValueAbstract_1725B672E1BF28B439E7E6BA7A432CB6" xlink:type="arc" />
    <link:label id="lab_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue_FA61BCDBBCB323C471A2E6BA7A4322EB_terseLabel_en-US" xlink:label="lab_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue_FA61BCDBBCB323C471A2E6BA7A4322EB" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Due in one year or less</link:label>
    <link:label id="lab_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue_FA61BCDBBCB323C471A2E6BA7A4322EB_label_en-US" xlink:label="lab_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue_FA61BCDBBCB323C471A2E6BA7A4322EB" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, within One Year, Fair Value</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue_FA61BCDBBCB323C471A2E6BA7A4322EB" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue_FA61BCDBBCB323C471A2E6BA7A4322EB" xlink:to="lab_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue_FA61BCDBBCB323C471A2E6BA7A4322EB" xlink:type="arc" />
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