<?xml version="1.0" encoding="UTF-8"?><edgarSubmission xmlns="http://www.sec.gov/edgar/nport" xmlns:com="http://www.sec.gov/edgar/common" xmlns:ncom="http://www.sec.gov/edgar/nportcommon" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.sec.gov/edgar/nport eis_NPORT_Filer.xsd">
  <headerData>
    <submissionType>NPORT-P</submissionType>
    <isConfidential>false</isConfidential>
    <filerInfo>

      <filer>
        <issuerCredentials>
          <cik>0000742212</cik>
          <ccc>XXXXXXXX</ccc>
        </issuerCredentials>
      </filer>


      <seriesClassInfo>
        <seriesId>S000000041</seriesId>
        <classId>C000000076</classId>
      </seriesClassInfo>


    </filerInfo>
  </headerData>
  <formData>
    <genInfo>
      <regName>NORTHWESTERN MUTUAL SERIES FUND INC</regName>
      <regFileNumber>811-03990</regFileNumber>
      <regCik>0000742212</regCik>
      <regLei>549300T1UBX7MDSNZA55</regLei>
      <regStreet1>720 E WISCONSIN AVE</regStreet1>
      <regCity>MILWAUKEE</regCity>
      <regStateConditional regCountry="US" regState="US-WI"/>
      <regZipOrPostalCode>53202</regZipOrPostalCode>
      <regPhone>414-271-1444</regPhone>
      <seriesName>Domestic Equity Portfolio</seriesName>
      <seriesId>S000000041</seriesId>
      <seriesLei>5493004TKKI7X6F71K84</seriesLei>
      <repPdEnd>2020-12-31</repPdEnd>
      <repPdDate>2020-06-30</repPdDate>
      <isFinalFiling>N</isFinalFiling>
    </genInfo>
    <fundInfo>
      <totAssets>793451940.97</totAssets>
      <totLiabs>396194.92</totLiabs>
      <netAssets>793055746.05</netAssets>
      <assetsAttrMiscSec>0.00000000</assetsAttrMiscSec>
      <assetsInvested>0.00000000</assetsInvested>
      <amtPayOneYrBanksBorr>0.00000000</amtPayOneYrBanksBorr>
      <amtPayOneYrCtrldComp>0.00000000</amtPayOneYrCtrldComp>
      <amtPayOneYrOthAffil>0.00000000</amtPayOneYrOthAffil>
      <amtPayOneYrOther>0.00000000</amtPayOneYrOther>
      <amtPayAftOneYrBanksBorr>0.00000000</amtPayAftOneYrBanksBorr>
      <amtPayAftOneYrCtrldComp>0.00000000</amtPayAftOneYrCtrldComp>
      <amtPayAftOneYrOthAffil>0.00000000</amtPayAftOneYrOthAffil>
      <amtPayAftOneYrOther>0.00000000</amtPayAftOneYrOther>
      <delayDeliv>0.00000000</delayDeliv>
      <standByCommit>0.00000000</standByCommit>
      <liquidPref>0.00000000</liquidPref>
      <cshNotRptdInCorD>0.00000000</cshNotRptdInCorD>
      <isNonCashCollateral>N</isNonCashCollateral>
      <returnInfo>
        <monthlyTotReturns>
          <monthlyTotReturn classId="C000000076" rtn1="11.87000000" rtn2="4.37000000" rtn3="-1.20000000"/>
        </monthlyTotReturns>
        <othMon1 netRealizedGain="-29152415.27000000" netUnrealizedAppr="108658467.48000000"/>
        <othMon2 netRealizedGain="-737423.68000000" netUnrealizedAppr="32698072.76000000"/>
        <othMon3 netRealizedGain="0.00000000" netUnrealizedAppr="-10207679.12000000"/>
      </returnInfo>
      <mon1Flow redemption="4436175.99000000" reinvestment="0.00000000" sales="7580001.07000000"/>
      <mon2Flow redemption="3257799.25000000" reinvestment="0.00000000" sales="7865850.63000000"/>
      <mon3Flow redemption="5333522.05000000" reinvestment="0.00000000" sales="4850551.42000000"/>

    </fundInfo>
    <invstOrSecs>
      <invstOrSec>
        <name>Cigna Corp</name>
        <lei>549300VIWYMSIGT1U456</lei>
        <title>Cigna Corp</title>
        <cusip>125523100</cusip>
        <identifiers>
          <isin value="US1255231003"/>
        </identifiers>
        <balance>120903.00000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>22687447.95000000</valUSD>
        <pctVal>2.860763327546</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>EC</assetCat>
        <issuerCat>CORP</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>Johnson &amp; Johnson</name>
        <lei>549300G0CFPGEF6X2043</lei>
        <title>Johnson &amp; Johnson</title>
        <cusip>478160104</cusip>
        <identifiers>
          <isin value="US4781601046"/>
        </identifiers>
        <balance>168400.00000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>23682092.00000000</valUSD>
        <pctVal>2.986182512131</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>EC</assetCat>
        <issuerCat>CORP</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>Conagra Brands Inc</name>
        <lei>54930035UDEIH090K650</lei>
        <title>Conagra Brands Inc</title>
        <cusip>205887102</cusip>
        <identifiers>
          <isin value="US2058871029"/>
        </identifiers>
        <balance>720733.00000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>25348179.61000000</valUSD>
        <pctVal>3.196267063980</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>EC</assetCat>
        <issuerCat>CORP</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>Pfizer Inc</name>
        <lei>765LHXWGK1KXCLTFYQ30</lei>
        <title>Pfizer Inc</title>
        <cusip>717081103</cusip>
        <identifiers>
          <isin value="US7170811035"/>
        </identifiers>
        <balance>637200.00000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>20836440.00000000</valUSD>
        <pctVal>2.627361330370</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>EC</assetCat>
        <issuerCat>CORP</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>Cardinal Health Inc</name>
        <lei>CCU46N3GJMF4OK4N7U60</lei>
        <title>Cardinal Health Inc</title>
        <cusip>14149Y108</cusip>
        <identifiers>
          <isin value="US14149Y1082"/>
        </identifiers>
        <balance>461500.00000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>24085685.00000000</valUSD>
        <pctVal>3.037073386072</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>EC</assetCat>
        <issuerCat>CORP</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>Equity Residential</name>
        <lei>5493008RACSH5EP3PI59</lei>
        <title>Equity Residential</title>
        <cusip>29476L107</cusip>
        <identifiers>
          <isin value="US29476L1070"/>
        </identifiers>
        <balance>335495.00000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>19733815.90000000</valUSD>
        <pctVal>2.488326450982</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>EC</assetCat>
        <issuerConditional desc="REIT" issuerCat="OTHER"/>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>AT&amp;T Inc</name>
        <lei>549300Z40J86GGSTL398</lei>
        <title>AT&amp;T Inc</title>
        <cusip>00206R102</cusip>
        <identifiers>
          <isin value="US00206R1023"/>
        </identifiers>
        <balance>706600.00000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>21360518.00000000</valUSD>
        <pctVal>2.693444705040</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>EC</assetCat>
        <issuerCat>CORP</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>Allstate Corp/The</name>
        <lei>OBT0W1ED8G0NWVOLOJ77</lei>
        <title>Allstate Corp/The</title>
        <cusip>020002101</cusip>
        <identifiers>
          <isin value="US0200021014"/>
        </identifiers>
        <balance>224200.00000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>21745158.00000000</valUSD>
        <pctVal>2.741945709151</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>EC</assetCat>
        <issuerCat>CORP</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>Cisco Systems Inc</name>
        <lei>8E6NF1YAL0WT6CWXXV93</lei>
        <title>Cisco Systems Inc</title>
        <cusip>17275R102</cusip>
        <identifiers>
          <isin value="US17275R1023"/>
        </identifiers>
        <balance>561800.00000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>26202352.00000000</valUSD>
        <pctVal>3.303973539124</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>EC</assetCat>
        <issuerCat>CORP</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>CVS Health Corp</name>
        <lei>549300EJG376EN5NQE29</lei>
        <title>CVS Health Corp</title>
        <cusip>126650100</cusip>
        <identifiers>
          <isin value="US1266501006"/>
        </identifiers>
        <balance>385700.00000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>25058929.00000000</valUSD>
        <pctVal>3.159794141182</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>EC</assetCat>
        <issuerCat>CORP</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>Archer-Daniels-Midland Co</name>
        <lei>549300LO13MQ9HYSTR83</lei>
        <title>Archer-Daniels-Midland Co</title>
        <cusip>039483102</cusip>
        <identifiers>
          <isin value="US0394831020"/>
        </identifiers>
        <balance>576600.00000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>23006340.00000000</valUSD>
        <pctVal>2.900973874105</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>EC</assetCat>
        <issuerCat>CORP</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>Cognizant Technology Solutions Corp</name>
        <lei>5493006IEVQEFQO40L83</lei>
        <title>Cognizant Technology Solutions Corp</title>
        <cusip>192446102</cusip>
        <identifiers>
          <isin value="US1924461023"/>
        </identifiers>
        <balance>411218.00000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>23365406.76000000</valUSD>
        <pctVal>2.946250232266</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>EC</assetCat>
        <issuerCat>CORP</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>State Street Global Advisors</name>
        <lei>549300BZ5TGIFZUZDZ37</lei>
        <title>State Street Institutional US Government Money Market Fund</title>
        <cusip>857492706</cusip>
        <identifiers>
          <isin value="US8574927062"/>
        </identifiers>
        <balance>9619103.97000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>9619103.97000000</valUSD>
        <pctVal>1.212916496464</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>STIV</assetCat>
        <issuerCat>RF</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>Lowe's Cos Inc</name>
        <lei>WAFCR4OKGSC504WU3E95</lei>
        <title>Lowe's Cos Inc</title>
        <cusip>548661107</cusip>
        <identifiers>
          <isin value="US5486611073"/>
        </identifiers>
        <balance>221400.00000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>29915568.00000000</valUSD>
        <pctVal>3.772189804941</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>EC</assetCat>
        <issuerCat>CORP</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>Mondelez International Inc</name>
        <lei>549300DV9GIB88LZ5P30</lei>
        <title>Mondelez International Inc</title>
        <cusip>609207105</cusip>
        <identifiers>
          <isin value="US6092071058"/>
        </identifiers>
        <balance>438500.00000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>22420505.00000000</valUSD>
        <pctVal>2.827103278889</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>EC</assetCat>
        <issuerCat>CORP</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>American International Group Inc</name>
        <lei>ODVCVCQG2BP6VHV36M30</lei>
        <title>American International Group Inc</title>
        <cusip>026874784</cusip>
        <identifiers>
          <isin value="US0268747849"/>
        </identifiers>
        <balance>787500.00000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>24554250.00000000</valUSD>
        <pctVal>3.096156874507</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>EC</assetCat>
        <issuerCat>CORP</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>Marsh &amp; McLennan Cos Inc</name>
        <lei>549300XMP3KDCKJXIU47</lei>
        <title>Marsh &amp; McLennan Cos Inc</title>
        <cusip>571748102</cusip>
        <identifiers>
          <isin value="US5717481023"/>
        </identifiers>
        <balance>235600.00000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>25296372.00000000</valUSD>
        <pctVal>3.189734407195</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>EC</assetCat>
        <issuerCat>CORP</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>Intel Corp</name>
        <lei>KNX4USFCNGPY45LOCE31</lei>
        <title>Intel Corp</title>
        <cusip>458140100</cusip>
        <identifiers>
          <isin value="US4581401001"/>
        </identifiers>
        <balance>363900.00000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>21772137.00000000</valUSD>
        <pctVal>2.745347613763</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>EC</assetCat>
        <issuerCat>CORP</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>DuPont de Nemours Inc</name>
        <lei>5493004JF0SDFLM8GD76</lei>
        <title>DuPont de Nemours Inc</title>
        <cusip>26614N102</cusip>
        <identifiers>
          <isin value="US26614N1028"/>
        </identifiers>
        <balance>514784.00000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>27350473.92000000</valUSD>
        <pctVal>3.448745445225</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>EC</assetCat>
        <issuerCat>CORP</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>Merck &amp; Co Inc</name>
        <lei>4YV9Y5M8S0BRK1RP0397</lei>
        <title>Merck &amp; Co Inc</title>
        <cusip>58933Y105</cusip>
        <identifiers>
          <isin value="US58933Y1055"/>
        </identifiers>
        <balance>287400.00000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>22224642.00000000</valUSD>
        <pctVal>2.802406023876</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>EC</assetCat>
        <issuerCat>CORP</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>Verizon Communications Inc</name>
        <lei>2S72QS2UO2OESLG6Y829</lei>
        <title>Verizon Communications Inc</title>
        <cusip>92343V104</cusip>
        <identifiers>
          <isin value="US92343V1044"/>
        </identifiers>
        <balance>399800.00000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>22040974.00000000</valUSD>
        <pctVal>2.779246491785</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>EC</assetCat>
        <issuerCat>CORP</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>Oracle Corp</name>
        <lei>1Z4GXXU7ZHVWFCD8TV52</lei>
        <title>Oracle Corp</title>
        <cusip>68389X105</cusip>
        <identifiers>
          <isin value="US68389X1054"/>
        </identifiers>
        <balance>442800.00000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>24473556.00000000</valUSD>
        <pctVal>3.085981801644</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>EC</assetCat>
        <issuerCat>CORP</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>Truist Financial Corp</name>
        <lei>549300DRQQI75D2JP341</lei>
        <title>Truist Financial Corp</title>
        <cusip>89832Q109</cusip>
        <identifiers>
          <isin value="US89832Q1094"/>
        </identifiers>
        <balance>587600.00000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>22064380.00000000</valUSD>
        <pctVal>2.782197860603</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>EC</assetCat>
        <issuerCat>CORP</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>Comcast Corp</name>
        <lei>51M0QTTNCGUN7KFCFZ59</lei>
        <title>Comcast Corp</title>
        <cusip>20030N101</cusip>
        <identifiers>
          <isin value="US20030N1019"/>
        </identifiers>
        <balance>590511.00000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>23018118.78000000</valUSD>
        <pctVal>2.902459113958</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>EC</assetCat>
        <issuerCat>CORP</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>Caterpillar Inc</name>
        <lei>WRJR7GS4GTRECRRTVX92</lei>
        <title>Caterpillar Inc</title>
        <cusip>149123101</cusip>
        <identifiers>
          <isin value="US1491231015"/>
        </identifiers>
        <balance>196639.00000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>24874833.50000000</valUSD>
        <pctVal>3.136580703676</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>EC</assetCat>
        <issuerCat>CORP</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>Northrop Grumman Corp</name>
        <lei>RIMU48P07456QXSO0R61</lei>
        <title>Northrop Grumman Corp</title>
        <cusip>666807102</cusip>
        <identifiers>
          <isin value="US6668071029"/>
        </identifiers>
        <balance>66000.00000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>20291040.00000000</valUSD>
        <pctVal>2.558589367905</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>EC</assetCat>
        <issuerCat>CORP</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>ConocoPhillips</name>
        <lei>WPTL2Z3FIYTHSP5V2253</lei>
        <title>ConocoPhillips</title>
        <cusip>20825C104</cusip>
        <identifiers>
          <isin value="US20825C1045"/>
        </identifiers>
        <balance>609600.00000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>25615392.00000000</valUSD>
        <pctVal>3.229961087550</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>EC</assetCat>
        <issuerCat>CORP</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>Abbott Laboratories</name>
        <lei>HQD377W2YR662HK5JX27</lei>
        <title>Abbott Laboratories</title>
        <cusip>002824100</cusip>
        <identifiers>
          <isin value="US0028241000"/>
        </identifiers>
        <balance>272600.00000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>24923818.00000000</valUSD>
        <pctVal>3.142757381702</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>EC</assetCat>
        <issuerCat>CORP</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>Raytheon Technologies Corp</name>
        <lei>I07WOS4YJ0N7YRFE7309</lei>
        <title>Raytheon Technologies Corp</title>
        <cusip>75513E101</cusip>
        <identifiers>
          <isin value="US75513E1010"/>
        </identifiers>
        <balance>370979.00000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>22859725.98000000</valUSD>
        <pctVal>2.882486646601</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>EC</assetCat>
        <issuerCat>CORP</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>Dollar Tree Inc</name>
        <lei>549300PMSTQITB1WHR43</lei>
        <title>Dollar Tree Inc</title>
        <cusip>256746108</cusip>
        <identifiers>
          <isin value="US2567461080"/>
        </identifiers>
        <balance>299600.00000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>27766928.00000000</valUSD>
        <pctVal>3.501258031140</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>EC</assetCat>
        <issuerCat>CORP</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>Bank of New York Mellon Corp/The</name>
        <lei>WFLLPEPC7FZXENRZV188</lei>
        <title>Bank of New York Mellon Corp/The</title>
        <cusip>064058100</cusip>
        <identifiers>
          <isin value="US0640581007"/>
        </identifiers>
        <balance>598100.00000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>23116565.00000000</valUSD>
        <pctVal>2.914872644847</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>EC</assetCat>
        <issuerCat>CORP</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>Walt Disney Co/The</name>
        <lei>549300GZKULIZ0WOW665</lei>
        <title>Walt Disney Co/The</title>
        <cusip>254687106</cusip>
        <identifiers>
          <isin value="US2546871060"/>
        </identifiers>
        <balance>207136.00000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>23097735.36000000</valUSD>
        <pctVal>2.912498330040</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>EC</assetCat>
        <issuerCat>CORP</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>Broadcom Inc</name>
        <lei>549300WV6GIDOZJTV909</lei>
        <title>Broadcom Inc</title>
        <cusip>11135F101</cusip>
        <identifiers>
          <isin value="US11135F1012"/>
        </identifiers>
        <balance>86600.00000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>27331826.00000000</valUSD>
        <pctVal>3.446394044319</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>EC</assetCat>
        <issuerCat>CORP</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>Edison International</name>
        <lei>549300I7ROF15MAEVP56</lei>
        <title>Edison International</title>
        <cusip>281020107</cusip>
        <identifiers>
          <isin value="US2810201077"/>
        </identifiers>
        <balance>381300.00000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>20708403.00000000</valUSD>
        <pctVal>2.611216563670</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>EC</assetCat>
        <issuerCat>CORP</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
    </invstOrSecs>
    <explntrNotes>
      <explntrNote note="Monthly returns presented in Item B.5(a) have been calculated without deducting any applicable sales loads or redemption fees." noteItem="B.5.a"/>
    </explntrNotes>
    <signature>
      <ncom:dateSigned>2020-07-27</ncom:dateSigned>
      <ncom:nameOfApplicant>NORTHWESTERN MUTUAL SERIES FUND INC</ncom:nameOfApplicant>
      <ncom:signature>Barbara Courtney</ncom:signature>
      <ncom:signerName>Barbara Courtney</ncom:signerName>
      <ncom:title>Controller and Chief Accounting Officer</ncom:title>
    </signature>
  </formData>
</edgarSubmission>
