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    <isConfidential>false</isConfidential>
    <filerInfo>

      <filer>
        <issuerCredentials>
          <cik>0000893818</cik>
          <ccc>XXXXXXXX</ccc>
        </issuerCredentials>
      </filer>


      <seriesClassInfo>
        <seriesId>S000069123</seriesId>
        <classId>C000220933</classId>
        <classId>C000220932</classId>
        <classId>C000220934</classId>
      </seriesClassInfo>


    </filerInfo>
  </headerData>
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      <regName>BlackRock Funds III</regName>
      <regFileNumber>811-07332</regFileNumber>
      <regCik>0000893818</regCik>
      <regLei>5493008LW2651I1QB503</regLei>
      <regStreet1>100 Bellevue Parkway</regStreet1>
      <regCity>Wilmington</regCity>
      <regStateConditional regCountry="US" regState="US-DE"/>
      <regZipOrPostalCode>19809</regZipOrPostalCode>
      <regPhone>800-441-7762</regPhone>
      <seriesName>BlackRock LifePath ESG Index 2065 Fund</seriesName>
      <seriesId>S000069123</seriesId>
      <seriesLei>549300XDRGENBYRB8B19</seriesLei>
      <repPdEnd>2022-10-31</repPdEnd>
      <repPdDate>2022-04-30</repPdDate>
      <isFinalFiling>N</isFinalFiling>
    </genInfo>
    <fundInfo>
      <totAssets>2527025.71</totAssets>
      <totLiabs>192418.32</totLiabs>
      <netAssets>2334607.39</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="90802.85000000" lei="G5GSEF7VJP5I7OUK5573" name="BARCLAYS BANK PLC"/>
      </borrowers>
      <isNonCashCollateral>N</isNonCashCollateral>
      <returnInfo>
        <monthlyTotReturns>
          <monthlyTotReturn classId="C000220933" rtn1="-2.96000000" rtn2="2.08000000" rtn3="-7.92000000"/>
          <monthlyTotReturn classId="C000220932" rtn1="-2.96000000" rtn2="2.01000000" rtn3="-7.84000000"/>
          <monthlyTotReturn classId="C000220934" rtn1="-2.96000000" rtn2="2.06000000" rtn3="-7.92000000"/>
        </monthlyTotReturns>
        <othMon1 netRealizedGain="1419.46000000" netUnrealizedAppr="-76187.35000000"/>
        <othMon2 netRealizedGain="-425.25000000" netUnrealizedAppr="47102.56000000"/>
        <othMon3 netRealizedGain="8363.87000000" netUnrealizedAppr="-208058.40000000"/>
      </returnInfo>
      <mon1Flow redemption="0.00000000" reinvestment="0.00000000" sales="574.90000000"/>
      <mon2Flow redemption="0.00000000" reinvestment="0.00000000" sales="12458.30000000"/>
      <mon3Flow redemption="2.21000000" reinvestment="11.81000000" sales="22023.21000000"/>


    </fundInfo>
    <invstOrSecs>
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        <name>iShares Trust iShares ESG Aware MSCI EAFE ETF</name>
        <lei>549300IT2A3OM8F0BB22</lei>
        <title>iShares Trust iShares ESG Aware MSCI EAFE ETF</title>
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        <balance>8986.00000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>620663.02000000</valUSD>
        <pctVal>26.58532747983</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 ESG Aware US Aggregate Bond ETF</name>
        <lei>549300ZH4AMJV5ZGCV06</lei>
        <title>iShares ESG Aware US Aggregate Bond ETF</title>
        <cusip>46435U549</cusip>
        <identifiers>
          <isin value="US46435U5496"/>
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        <balance>503.00000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>24913.59000000</valUSD>
        <pctVal>1.067142599938</pctVal>
        <payoffProfile>Long</payoffProfile>
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        <invCountry>US</invCountry>
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        <fairValLevel>1</fairValLevel>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>iShares ESG Aware MSCI USA ETF</name>
        <lei>549300N2OW8SZV95FP93</lei>
        <title>iShares ESG Aware MSCI USA ETF</title>
        <cusip>46435G425</cusip>
        <identifiers>
          <isin value="US46435G4257"/>
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        <balance>12434.00000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>1144052.34000000</valUSD>
        <pctVal>49.00405716611</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 MSCI Emerging Markets Small-Cap ETF</name>
        <lei>5493007YPFO23SID2674</lei>
        <title>iShares MSCI Emerging Markets Small-Cap ETF</title>
        <cusip>464286475</cusip>
        <identifiers>
          <isin value="US4642864759"/>
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        <balance>672.00000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>36630.72000000</valUSD>
        <pctVal>1.569031270821</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>BLACKROCK CASH FUNDS TREASURY SL AGENCY SHARES</name>
        <lei>5493008LW2651I1QB503</lei>
        <title>BlackRock Cash Funds: Treasury, SL Agency Shares</title>
        <cusip>066922477</cusip>
        <identifiers>
          <isin value="US0669224778"/>
        </identifiers>
        <balance>5159.68000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>5159.68000000</valUSD>
        <pctVal>0.221008466866</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>iShares MSCI EAFE Small-Cap ETF</name>
        <lei>549300MJV5OZGVS4LX86</lei>
        <title>iShares MSCI EAFE Small-Cap ETF</title>
        <cusip>464288273</cusip>
        <identifiers>
          <isin value="US4642882736"/>
        </identifiers>
        <balance>1579.00000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>97424.30000000</valUSD>
        <pctVal>4.173048556999</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 Inc iShares ESG Aware MSCI EM ETF</name>
        <lei>549300JES9K0OUJ8F389</lei>
        <title>iShares Inc iShares ESG Aware MSCI EM ETF</title>
        <cusip>46434G863</cusip>
        <identifiers>
          <isin value="US46434G8630"/>
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        <balance>2664.00000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>91455.12000000</valUSD>
        <pctVal>3.917366165794</pctVal>
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        <assetCat>EC</assetCat>
        <issuerCat>RF</issuerCat>
        <invCountry>US</invCountry>
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        <fairValLevel>1</fairValLevel>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <loanByFundCondition isLoanByFund="Y" loanVal="90802.85000000"/>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>BlackRock Funds III</name>
        <lei>5493008LW2651I1QB503</lei>
        <title>BlackRock Cash Funds: Institutional, SL Agency Shares</title>
        <cusip>066922519</cusip>
        <identifiers>
          <isin value="US0669225197"/>
        </identifiers>
        <balance>91137.53500000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>91137.54000000</valUSD>
        <pctVal>3.903763022012</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>STIV</assetCat>
        <issuerCat>RF</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
        <securityLending>
          <cashCollateralCondition cashCollateralVal="91137.54000000" isCashCollateral="Y"/>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>iShares ESG Aware MSCI USA Small-Cap ETF</name>
        <lei>549300V3IZTYAHR0WL12</lei>
        <title>iShares ESG Aware MSCI USA Small-Cap ETF</title>
        <cusip>46435U663</cusip>
        <identifiers>
          <isin value="US46435U6635"/>
        </identifiers>
        <balance>3642.00000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>126450.24000000</valUSD>
        <pctVal>5.416338547613</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 MSCI Canada ETF</name>
        <lei>549300DXCD53F4JK3H45</lei>
        <title>iShares MSCI Canada ETF</title>
        <cusip>464286509</cusip>
        <identifiers>
          <isin value="US4642865095"/>
        </identifiers>
        <balance>2093.00000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>77545.65000000</valUSD>
        <pctVal>3.321571341380</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 Developed Real Estate Index Fund</name>
        <lei>549300CCO72SBIYZNP24</lei>
        <title>iShares Developed Real Estate Index Fund</title>
        <cusip>091936187</cusip>
        <identifiers>
          <isin value="US0919361875"/>
        </identifiers>
        <balance>10947.66500000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>118234.78000000</valUSD>
        <pctVal>5.064439550154</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>
    </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>2022-05-31</ncom:dateSigned>
      <ncom:nameOfApplicant>BlackRock Funds III</ncom:nameOfApplicant>
      <ncom:signature>Ann Frechette</ncom:signature>
      <ncom:signerName>Ann Frechette</ncom:signerName>
      <ncom:title>Assistant Treasurer</ncom:title>
    </signature>
  </formData>
</edgarSubmission>
