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  <headerData>
    <submissionType>NPORT-P</submissionType>
    <isConfidential>false</isConfidential>
    <filerInfo>

      <filer>
        <issuerCredentials>
          <cik>0000351601</cik>
          <ccc>XXXXXXXX</ccc>
        </issuerCredentials>
      </filer>


      <seriesClassInfo>
        <seriesId>S000001577</seriesId>
        <classId>C000137235</classId>
        <classId>C000137234</classId>
        <classId>C000027578</classId>
        <classId>C000004261</classId>
        <classId>C000004263</classId>
        <classId>C000004260</classId>
      </seriesClassInfo>


    </filerInfo>
  </headerData>
  <formData>
    <genInfo>
      <regName>RUSSELL INVESTMENT CO</regName>
      <regFileNumber>811-03153</regFileNumber>
      <regCik>0000351601</regCik>
      <regLei>549300J63VJ9OS4TCK93</regLei>
      <regStreet1>1301 SECOND AVENUE</regStreet1>
      <regStreet2>18TH FLOOR</regStreet2>
      <regCity>SEATTLE</regCity>
      <regStateConditional regCountry="US" regState="US-WA"/>
      <regZipOrPostalCode>98101</regZipOrPostalCode>
      <regPhone>800-787-7354</regPhone>
      <seriesName>Moderate Strategy Fund</seriesName>
      <seriesId>S000001577</seriesId>
      <seriesLei>1PKJF0IQ0W6P2ANFY543</seriesLei>
      <repPdEnd>2023-10-31</repPdEnd>
      <repPdDate>2023-04-30</repPdDate>
      <isFinalFiling>N</isFinalFiling>
    </genInfo>
    <fundInfo>
      <totAssets>155338923.94</totAssets>
      <totLiabs>108360.37</totLiabs>
      <netAssets>155230563.57</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="C000137235" rtn1="-2.75000000" rtn2="1.76000000" rtn3="0.88000000"/>
          <monthlyTotReturn classId="C000137234" rtn1="-2.63000000" rtn2="1.64000000" rtn3="0.93000000"/>
          <monthlyTotReturn classId="C000027578" rtn1="-2.60000000" rtn2="1.74000000" rtn3="0.95000000"/>
          <monthlyTotReturn classId="C000004261" rtn1="-2.63000000" rtn2="1.60000000" rtn3="0.86000000"/>
          <monthlyTotReturn classId="C000004263" rtn1="-2.60000000" rtn2="1.63000000" rtn3="1.06000000"/>
          <monthlyTotReturn classId="C000004260" rtn1="-8.22000000" rtn2="-4.11000000" rtn3="-4.90000000"/>
        </monthlyTotReturns>
        <othMon1 netRealizedGain="-154280.17000000" netUnrealizedAppr="-4025269.45000000"/>
        <othMon2 netRealizedGain="-1311015.02000000" netUnrealizedAppr="4006917.63000000"/>
        <othMon3 netRealizedGain="-132101.08000000" netUnrealizedAppr="1448640.81000000"/>
      </returnInfo>
      <mon1Flow redemption="2333183.79000000" reinvestment="0.00000000" sales="1437962.01000000"/>
      <mon2Flow redemption="3716150.93000000" reinvestment="0.00000000" sales="1686818.08000000"/>
      <mon3Flow redemption="3360341.60000000" reinvestment="135116.34000000" sales="385346.71000000"/>


      <varInfo>

        <fundsDesignatedInfo>
          <nameDesignatedIndex>RIC Moderate Strategy Fund Composite 2021-04-21</nameDesignatedIndex>
          <indexIdentifier>CMP000107</indexIdentifier>

        </fundsDesignatedInfo>

      </varInfo>
    </fundInfo>
    <invstOrSecs>
      <invstOrSec>
        <name>Multifactor Bond Fund</name>
        <lei>549300VRXC77M7KZRU37</lei>
        <title>Multifactor Bond Fund</title>
        <cusip>78250F398</cusip>
        <identifiers>
          <isin value="US78250F3982"/>
        </identifiers>
        <balance>2699066.21000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>21754473.64000000</valUSD>
        <pctVal>14.01429791897</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>Multifactor International Equity Fund</name>
        <lei>5493004SX31W5EXJ2590</lei>
        <title>Multifactor International Equity Fund</title>
        <cusip>78249R289</cusip>
        <identifiers>
          <isin value="US78249R2893"/>
        </identifiers>
        <balance>632771.59000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>6201161.57000000</valUSD>
        <pctVal>3.994807096866</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>Multifactor U.S. Equity Fund</name>
        <lei>549300PPT7741EJKD754</lei>
        <title>Multifactor U.S. Equity Fund</title>
        <cusip>78249R347</cusip>
        <identifiers>
          <isin value="US78249R3479"/>
        </identifiers>
        <balance>1366452.52000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>20264490.81000000</valUSD>
        <pctVal>13.05444645948</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>Emerging Markets Fund</name>
        <lei>TUWQFBBWGP866F5SFO52</lei>
        <title>Emerging Markets Fund</title>
        <cusip>782494439</cusip>
        <identifiers>
          <isin value="US7824944398"/>
        </identifiers>
        <balance>207951.51000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>3088079.97000000</valUSD>
        <pctVal>1.989350485484</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>U.S. Small Cap Equity Fund</name>
        <lei>Z3PZWNK5SYVMTLL03992</lei>
        <title>U.S. Small Cap Equity Fund</title>
        <cusip>782493266</cusip>
        <identifiers>
          <isin value="US7824932666"/>
        </identifiers>
        <balance>193461.56000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>4625665.83000000</valUSD>
        <pctVal>2.979867961320</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>Strategic Bond Fund</name>
        <lei>XI1M1CDVRC8YNT0B5804</lei>
        <title>Strategic Bond Fund</title>
        <cusip>782493159</cusip>
        <identifiers>
          <isin value="US7824931593"/>
        </identifiers>
        <balance>5844427.81000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>54294734.33000000</valUSD>
        <pctVal>34.97683257815</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>Global Equity Fund</name>
        <lei>VTHOU527SFHXM6LQY641</lei>
        <title>Global Equity Fund</title>
        <cusip>782494447</cusip>
        <identifiers>
          <isin value="US7824944471"/>
        </identifiers>
        <balance>2615956.86000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>21790920.67000000</valUSD>
        <pctVal>14.03777720627</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>Unconstrained Total Return Fund</name>
        <lei>549300XXLJ6MGU95XN21</lei>
        <title>Unconstrained Total Return Fund</title>
        <cusip>78250F679</cusip>
        <identifiers>
          <isin value="US78250F6795"/>
        </identifiers>
        <balance>361452.91000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>3086807.82000000</valUSD>
        <pctVal>1.988530962594</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>Global Real Estate Securities Fund</name>
        <lei>12EWS3SG92VUE6HTB591</lei>
        <title>Global Real Estate Securities Fund</title>
        <cusip>782478713</cusip>
        <identifiers>
          <isin value="US7824787136"/>
        </identifiers>
        <balance>168604.22000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>4697313.68000000</valUSD>
        <pctVal>3.026023723660</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>Multi-Strategy Income Fund</name>
        <lei>549300A5DFWAE2ARUU44</lei>
        <title>Multi-Strategy Income Fund</title>
        <cusip>78249R214</cusip>
        <identifiers>
          <isin value="US78249R2141"/>
        </identifiers>
        <balance>1686153.87000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>15529477.18000000</valUSD>
        <pctVal>10.00413631365</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="The calculation of portfolio-level risk metrics does not look through to the holdings of underlying fixed income funds." noteItem="B.3.b"/>
      <explntrNote note="The calculation of portfolio-level risk metrics does not look through to the holdings of underlying fixed income funds." noteItem="B.3.a"/>
      <explntrNote note="The calculation of portfolio-level risk metrics does not look through to the holdings of underlying fixed income funds." noteItem="B.3.c"/>
    </explntrNotes>
    <signature>
      <ncom:dateSigned>2023-05-15</ncom:dateSigned>
      <ncom:nameOfApplicant>RUSSELL INVESTMENT CO</ncom:nameOfApplicant>
      <ncom:signature>Kari Seabrands</ncom:signature>
      <ncom:signerName>Kari Seabrands</ncom:signerName>
      <ncom:title>Treasurer, Chief Accounting Officer and Chief Financial Officer</ncom:title>
    </signature>
  </formData>
</edgarSubmission>
