<?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>0001317146</cik>
          <ccc>XXXXXXXX</ccc>
        </issuerCredentials>
      </filer>
      
      
      <seriesClassInfo>
        <seriesId>S000003830</seriesId>
        <classId>C000010686</classId>
        <classId>C000067851</classId>
      </seriesClassInfo>
      
      
    </filerInfo>
  </headerData>
  <formData>
    <genInfo>
      <regName>MML Series Investment Fund II</regName>
      <regFileNumber>811-21714</regFileNumber>
      <regCik>0001317146</regCik>
      <regLei>XSZQMOMB2JPNHA01JH98</regLei>
      <regStreet1>1295 State Street</regStreet1>
      <regCity>Springfield</regCity>
      <regStateConditional regCountry="US" regState="US-MA"/>
      <regZipOrPostalCode>01111-0001</regZipOrPostalCode>
      <regPhone>413-744-1000</regPhone>
      <seriesName>MML VIP BlackRock(R) Balanced Fund</seriesName>
      <seriesId>S000003830</seriesId>
      <seriesLei>EDH5O9E8SOUF6NJ80G11</seriesLei>
      <repPdEnd>2026-12-31</repPdEnd>
      <repPdDate>2026-06-30</repPdDate>
      <isFinalFiling>N</isFinalFiling>
    </genInfo>
    <fundInfo>
      <totAssets>805867864.69</totAssets>
      <totLiabs>119108626.21</totLiabs>
      <netAssets>686759238.48</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>
      <borrowers>
        <borrower aggrVal="328023.36000000" lei="549300KUN9K9K32C6D97" name="BNP Paribas Prime Brokerage International, Limited"/>
        <borrower aggrVal="7536295.00000000" lei="RCNB6OTYUAMMP879YW96" name="BNP Paribas Securities Corp."/>
        <borrower aggrVal="56146090.00000000" lei="549300HN4UKV1E2R3U73" name="BofA Securities, Inc."/>
        <borrower aggrVal="166140.00000000" lei="12UUJYTN7D3SW8KCSG25" name="Citadel Securities LLC"/>
        <borrower aggrVal="1770088.32000000" lei="FOR8UP27PHTHYVLBNG30" name="Goldman Sachs &amp; Co. LLC"/>
      </borrowers>
      <aggregateCondition isNonCashCollateral="Y">
        <aggregateInfos>
          <aggregateInfo amt="2241233.76000000" collatrl="2140270.80000000">
            <invstCat>UST</invstCat>
          </aggregateInfo>
        </aggregateInfos>
      </aggregateCondition>
      <returnInfo>
        <monthlyTotReturns>
          <monthlyTotReturn classId="C000010686" rtn1="6.40000000" rtn2="3.27000000" rtn3="-0.31000000"/>
          <monthlyTotReturn classId="C000067851" rtn1="6.38000000" rtn2="3.24000000" rtn3="-0.33000000"/>
        </monthlyTotReturns>
        <othMon1 netRealizedGain="-1039423.44000000" netUnrealizedAppr="41481074.30000000"/>
        <othMon2 netRealizedGain="983343.16000000" netUnrealizedAppr="20384088.41000000"/>
        <othMon3 netRealizedGain="1402184.68000000" netUnrealizedAppr="-5409752.44000000"/>
      </returnInfo>
      <mon1Flow redemption="7215635.60000000" reinvestment="0.00000000" sales="1466352.14000000"/>
      <mon2Flow redemption="7617753.29000000" reinvestment="0.00000000" sales="1038428.03000000"/>
      <mon3Flow redemption="6411358.97000000" reinvestment="0.00000000" sales="426422.59000000"/>
      
      
    </fundInfo>
    <invstOrSecs>
      <invstOrSec>
        <name>iShares Core S&amp;P Total U.S. Stock Market ETF</name>
        <lei>549300E44NRXZV2OY345</lei>
        <title>iShares Core S&amp;P Total U.S. Stock Market ETF</title>
        <cusip>464287150</cusip>
        <identifiers>
          <isin value="US4642871507"/>
        </identifiers>
        <balance>1319432.00000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>216743094.64000000</valUSD>
        <pctVal>31.56027360035</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>EC</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>iShares Core S&amp;P 500 ETF</name>
        <lei>5493007M4YMN8XL48C14</lei>
        <title>iShares Core S&amp;P 500 ETF</title>
        <cusip>464287200</cusip>
        <identifiers>
          <isin value="US4642872000"/>
        </identifiers>
        <balance>263096.00000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>197029963.44000000</valUSD>
        <pctVal>28.68981622672</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>EC</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>iShares Core U.S. Aggregate Bond ETF</name>
        <lei>549300F7VSXTKBGHJE47</lei>
        <title>iShares Core U.S. Aggregate Bond ETF</title>
        <cusip>464287226</cusip>
        <identifiers>
          <isin value="US4642872265"/>
        </identifiers>
        <balance>1013020.00000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>100268719.60000000</valUSD>
        <pctVal>14.60027240724</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>EC</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>iShares Core S&amp;P Mid-Cap ETF</name>
        <lei>549300ODQWH5PC0IUZ78</lei>
        <title>iShares Core S&amp;P Mid-Cap ETF</title>
        <cusip>464287507</cusip>
        <identifiers>
          <isin value="US4642875078"/>
        </identifiers>
        <balance>192307.00000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>14828792.77000000</valUSD>
        <pctVal>2.159241833108</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>EC</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>iShares Core S&amp;P Small-Cap ETF</name>
        <lei>549300BZQ17QYN750B25</lei>
        <title>iShares Core S&amp;P Small-Cap ETF</title>
        <cusip>464287804</cusip>
        <identifiers>
          <isin value="US4642878049"/>
        </identifiers>
        <balance>47114.00000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>6987477.34000000</valUSD>
        <pctVal>1.017456620673</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>EC</assetCat>
        <issuerCat>RF</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>
        
        <fairValLevel>1</fairValLevel>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <loanByFundCondition isLoanByFund="Y" loanVal="2098111.68000000"/>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>iShares iBoxx USD High Yield Corporate Bond ETF</name>
        <lei>549300FCCXHK7O37PQ68</lei>
        <title>iShares iBoxx USD High Yield Corporate Bond ETF</title>
        <cusip>464288513</cusip>
        <identifiers>
          <isin value="US4642885135"/>
        </identifiers>
        <balance>315791.00000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>25253806.27000000</valUSD>
        <pctVal>3.677243035840</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>EC</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>iShares 5-10 Year Investment Grade Corporate Bond ETF</name>
        <lei>549300ZJOCMXQZ0RKQ84</lei>
        <title>iShares 5-10 Year Investment Grade Corporate Bond ETF</title>
        <cusip>464288638</cusip>
        <identifiers>
          <isin value="US4642886380"/>
        </identifiers>
        <balance>468436.00000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>24906742.12000000</valUSD>
        <pctVal>3.626706526020</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>EC</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>iShares Core Universal USD Bond ETF</name>
        <lei>549300IWM5U5LVTDP761</lei>
        <title>iShares Core Universal USD Bond ETF</title>
        <cusip>46434V613</cusip>
        <identifiers>
          <isin value="US46434V6130"/>
        </identifiers>
        <balance>2177125.00000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>100474318.75000000</valUSD>
        <pctVal>14.63020999504</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>EC</assetCat>
        <issuerCat>RF</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>
        
        <fairValLevel>1</fairValLevel>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <loanByFundCondition isLoanByFund="Y" loanVal="63848525.00000000"/>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>Fixed Income Clearing Corp.</name>
        <lei>549300H47WTHXPU08X20</lei>
        <title>FIXED INC CLEARING CORP.REPO</title>
        <cusip>000000000</cusip>
        <identifiers>
          <other otherDesc="Internal Identifier" value="85748R009"/>
        </identifiers>
        <balance>672044.37000000</balance>
        <units>PA</units>
        <curCd>USD</curCd>
        <valUSD>672044.37000000</valUSD>
        <pctVal>0.097857346846</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>RA</assetCat>
        <issuerCat>CORP</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>
        
        <fairValLevel>2</fairValLevel>
        <repurchaseAgrmt>
          <transCat>Repurchase</transCat>
          <clearedCentCparty centralCounterparty="Fixed Income Clearing Corp." isCleared="Y"/>
          <isTriParty>N</isTriParty>
          <repurchaseRt>2.00000000</repurchaseRt>
          <maturityDt>2026-07-01</maturityDt>
          <repurchaseCollaterals>
            <repurchaseCollateral>
              <principalAmt>690600.00000000</principalAmt>
              <principalCd>USD</principalCd>
              <collateralVal>685485.26000000</collateralVal>
              <collateralCd>USD</collateralCd>
              <invstCat>UST</invstCat>
            </repurchaseCollateral>
          </repurchaseCollaterals>
        </repurchaseAgrmt>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>State Street Global Advisors</name>
        <lei>5493008BJIBKQ5KTIF74</lei>
        <title>State Street Navigator Securities Lending Government Money Market Portfolio</title>
        <cusip>857509301</cusip>
        <identifiers>
          <isin value="US8575093013"/>
        </identifiers>
        <balance>65370375.00000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>65370375.00000000</valUSD>
        <pctVal>9.518674280186</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>STIV</assetCat>
        <issuerCat>RF</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>
        
        <fairValLevel>1</fairValLevel>
        <securityLending>
          <cashCollateralCondition cashCollateralVal="65370375.00000000" isCashCollateral="Y"/>
          <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>2026-07-15</ncom:dateSigned>
      <ncom:nameOfApplicant>MML Series Investment Fund II</ncom:nameOfApplicant>
      <ncom:signature>Renee Hitchcock</ncom:signature>
      <ncom:signerName>Renee Hitchcock</ncom:signerName>
      <ncom:title>CFO and Treasurer</ncom:title>
    </signature>
  </formData>
</edgarSubmission>
