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    <filerInfo>
      <liveTestFlag>LIVE</liveTestFlag>
      <filer>
        <issuerCredentials>
          <cik>0000843075</cik>
          <ccc>XXXXXXXX</ccc>
        </issuerCredentials>
      </filer>
      <flags>
        <returnCopyFlag>false</returnCopyFlag>
        <overrideInternetFlag>false</overrideInternetFlag>
        <confirmingCopyFlag>false</confirmingCopyFlag>
      </flags>
      <investmentCompanyType>N-4</investmentCompanyType>
    </filerInfo>
    <seriesClass>
      <reportClass>
        <classInfo>
          <classId>C000024612</classId>
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        <classInfo>
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        <classInfo>
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        <classInfo>
          <classId>C000047927</classId>
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        <classInfo>
          <classId>C000144587</classId>
        </classInfo>
        <classInfo>
          <classId>C000154397</classId>
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    <generalInfo reportEndingPeriod="2018-12-31" isReportPeriodLt12="N"/>
    <registrantInfo>
      <registrantFullName>NATIONWIDE VARIABLE ACCOUNT 4</registrantFullName>
      <investmentCompFileNo>811-05701</investmentCompFileNo>
      <registrantCik>0000843075</registrantCik>
      <registrantLei>AM9FLTUTLEC73M6N7I37</registrantLei>
      <registrantstreet1>One Nationwide Plaza</registrantstreet1>
      <registrantcity>Columbus</registrantcity>
      <registrantzipCode>43215-2226</registrantzipCode>
      <registrantstate>US-OH</registrantstate>
      <registrantcountry>US</registrantcountry>
      <registrantphoneNumber>6142497111</registrantphoneNumber>
      <websites>
        <website webpage="www.nationwide.com"/>
      </websites>
      <locationBooksRecords>
        <locationBooksRecord>
          <officeName>Nationwide Life Insurance Company</officeName>
          <officeAddress1>One Nationwide Plaza</officeAddress1>
          <officeCity>Columbus</officeCity>
          <officeStateCountry officeState="US-OH" officeCountry="US"/>
          <officeRecordsZipCode>43215-2226</officeRecordsZipCode>
          <officePhone>6142497111</officePhone>
          <booksRecordsDesc>The accounts, books, and other documents relating to the business of Nationwide Variable Account-4 which constitute the record forming the basis for financial statements required to be filed pursuant to section 30 of the Investment Company Act of 1940 and of the auditor's certificates relating thereto.</booksRecordsDesc>
        </locationBooksRecord>
      </locationBooksRecords>
      <isRegistrantFirstFiling>Y</isRegistrantFirstFiling>
      <isRegistrantLastFiling>N</isRegistrantLastFiling>
      <registrantFamilyInvComp isRegistrantFamilyInvComp="Y" familyInvCompFullName="Nationwide Registered Separate Accounts"/>
      <registrantClassificationType>N-4</registrantClassificationType>
      <isSecuritiesActRegistration>Y</isSecuritiesActRegistration>
      <chiefComplianceOfficers>
        <chiefComplianceOfficer>
          <ccoName>James Jay Rabenstine</ccoName>
          <crdNumber>002025566</crdNumber>
          <ccoStreet1>One Nationwide Plaza</ccoStreet1>
          <ccoCity>Columbus</ccoCity>
          <ccoStateCountry ccoState="US-OH" ccoCountry="US"/>
          <ccoZipCode>43215-2226</ccoZipCode>
          <ccoPhone>XXXXXX</ccoPhone>
          <isCcoChangedSinceLastFiling>N</isCcoChangedSinceLastFiling>
          <ccoEmployers>
            <ccoEmployer ccoEmployerName="Arborial Artisans, LLC" ccoEmployerId="03-0507043"/>
          </ccoEmployers>
        </chiefComplianceOfficer>
      </chiefComplianceOfficers>
      <isRegistrantSubmittedMatter>N</isRegistrantSubmittedMatter>
      <isPreviousLegalProceeding>N</isPreviousLegalProceeding>
      <isPreviousProceedingTerminated>N</isPreviousProceedingTerminated>
      <isFinancialSupportDuringPeriod>N</isFinancialSupportDuringPeriod>
      <releaseNumbers isExemptionFromAct="Y">
        <releaseNumberInfo releaseNumber="IC-17693"/>
      </releaseNumbers>
      <principalUnderwriters>
        <principalUnderwriter>
          <principalUnderwriterName>Nationwide Investment Services Corporation</principalUnderwriterName>
          <principalUnderwriterFileNumber>8-20254</principalUnderwriterFileNumber>
          <principalUnderwriterCrdNumber>000007110</principalUnderwriterCrdNumber>
          <principalUnderwriterLei>N/A</principalUnderwriterLei>
          <principalUnderWriterStateCountry principalUnderWriterState="US-OH" principalUnderWriterCountry="US"/>
          <isPrincipalUnderwriterAffiliatedWithRegistrant>Y</isPrincipalUnderwriterAffiliatedWithRegistrant>
        </principalUnderwriter>
        <principalUnderwriter>
          <principalUnderwriterName>Morgan Stanley</principalUnderwriterName>
          <principalUnderwriterFileNumber>008-68191</principalUnderwriterFileNumber>
          <principalUnderwriterCrdNumber>000149777</principalUnderwriterCrdNumber>
          <principalUnderwriterLei>N/A</principalUnderwriterLei>
          <principalUnderWriterStateCountry principalUnderWriterState="US-NY" principalUnderWriterCountry="US"/>
          <isPrincipalUnderwriterAffiliatedWithRegistrant>N</isPrincipalUnderwriterAffiliatedWithRegistrant>
        </principalUnderwriter>
      </principalUnderwriters>
      <isUnderwriterHiredOrTerminated>N</isUnderwriterHiredOrTerminated>
      <publicAccountants>
        <publicAccountant>
          <publicAccountantName>KPMG, LLP</publicAccountantName>
          <pcaobNumber>00184</pcaobNumber>
          <publicAccountantLei>N/A</publicAccountantLei>
          <publicAccountantStateCountry publicAccountantState="US-DE" publicAccountantCountry="US"/>
        </publicAccountant>
      </publicAccountants>
      <isPublicAccountantChanged>N</isPublicAccountantChanged>
      <isOpinionOffered>N</isOpinionOffered>
      <isMaterialChange>N</isMaterialChange>
      <isAccountingPrincipleChange>N</isAccountingPrincipleChange>
    </registrantInfo>
    <unitInvestmentTrust>
      <depositors>
        <depositor>
          <depositorName>Nationwide Life Insurance Company</depositorName>
          <depositorCrdNo>N/A</depositorCrdNo>
          <depositorLei>AM9FLTUTLEC73M6N7I37</depositorLei>
          <depositorStateCountry depositorState="US-OH" depositorCountry="US"/>
          <depositorUltimateParentname>Nationwide Mutual Insurance Company</depositorUltimateParentname>
        </depositor>
      </depositors>
      <uitAdmins>
        <uitAdmin>
          <uitAdminName>Nationwide Life Insurance Company</uitAdminName>
          <uitAdminLei>AM9FLTUTLEC73M6N7I37</uitAdminLei>
          <uitAdminStateCountry uitAdminState="US-OH" uitAdminCountry="US"/>
          <isUitAdminAffiliated>Y</isUitAdminAffiliated>
          <isUitAdminSubAdmin>N</isUitAdminSubAdmin>
        </uitAdmin>
      </uitAdmins>
      <isUitAdminHiredTerminated>N</isUitAdminHiredTerminated>
      <registrantSeparateInsuranceAccount isRegistrantSeparateInsuranceAccount="Y" separateAccountSeriesId="S000009060"/>
      <numOfContracts>14992</numOfContracts>
      <contractSecurities>
        <contractSecurity separateAccountSecurityName="America's marketFLEX Annuity" separateAccountContractId="C000024612" separateAccountTotalAsset="303635584.370000000000" numContractsSold="36" grossPremiumReceived="2726737.760000000000" grossPremiumReceivedSection1035="2095833.890000000000" numContractsAffected="31" contractValueRedeemed="49508065.160000000000" contractValueRedeemedSection1035="10147975.250000000000" numContractsAffectedRedeemed="57"/>
        <contractSecurity separateAccountSecurityName="Portfolio Foundation Variable Annuity" separateAccountContractId="C000025662" separateAccountTotalAsset="1629239.470000000000" numContractsSold="0" grossPremiumReceived="0.000000000000" grossPremiumReceivedSection1035="0.000000000000" numContractsAffected="0" contractValueRedeemed="81768.170000000000" contractValueRedeemedSection1035="0.000000000000" numContractsAffectedRedeemed="0"/>
        <contractSecurity separateAccountSecurityName="America's marketFLEX Annuity II" separateAccountContractId="C000036681" separateAccountTotalAsset="704787523.040000000000" numContractsSold="16" grossPremiumReceived="1622309.830000000000" grossPremiumReceivedSection1035="1546767.200000000000" numContractsAffected="14" contractValueRedeemed="148770827.520000000000" contractValueRedeemedSection1035="19273190.380000000000" numContractsAffectedRedeemed="113"/>
        <contractSecurity separateAccountSecurityName="America's marketFLEX Advisor Annuity" separateAccountContractId="C000047927" separateAccountTotalAsset="47038345.870000000000" numContractsSold="2" grossPremiumReceived="992090.780000000000" grossPremiumReceivedSection1035="992090.780000000000" numContractsAffected="2" contractValueRedeemed="12946338.900000000000" contractValueRedeemedSection1035="3364979.630000000000" numContractsAffectedRedeemed="25"/>
        <contractSecurity separateAccountSecurityName="America's marketFLEX Edge" separateAccountContractId="C000144587" separateAccountTotalAsset="146829825.660000000000" numContractsSold="2" grossPremiumReceived="753651.490000000000" grossPremiumReceivedSection1035="753651.490000000000" numContractsAffected="2" contractValueRedeemed="21164616.060000000000" contractValueRedeemedSection1035="2794075.690000000000" numContractsAffectedRedeemed="27"/>
        <contractSecurity separateAccountSecurityName="Nationwide Destination SM Freedom+" separateAccountContractId="C000154397" separateAccountTotalAsset="844583570.450000000000" numContractsSold="1478" grossPremiumReceived="330390453.600000000000" grossPremiumReceivedSection1035="232972972.010000000000" numContractsAffected="817" contractValueRedeemed="29535952.700000000000" contractValueRedeemedSection1035="2325366.700000000000" numContractsAffectedRedeemed="11"/>
      </contractSecurities>
      <isRule6C7Reliance>Y</isRule6C7Reliance>
      <isRule11A2Reliance>N</isRule11A2Reliance>
    </unitInvestmentTrust>
    <signature registrantSignedName="NATIONWIDE VARIABLE ACCOUNT 4" signedDate="2019-03-15" signature="Alice F. Brookshire" title="AVP - Finance"/>
  </formData>
</edgarSubmission>
