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


      <seriesClassInfo>
        <seriesId>S000001580</seriesId>
        <classId>C000004273</classId>
        <classId>C000004274</classId>
        <classId>C000004276</classId>
        <classId>C000027582</classId>
        <classId>C000137239</classId>
      </seriesClassInfo>


    </filerInfo>
  </headerData>
  <formData>
    <genInfo>
      <regName>RUSSELL INVESTMENT CO</regName>
      <regFileNumber>811-03153</regFileNumber>
      <regCik>0000351601</regCik>
      <regLei>549300J63VJ9OS4TCK93</regLei>
      <regStreet1>401 Union Street</regStreet1>
      <regStreet2>18th Floor</regStreet2>
      <regCity>Seattle</regCity>
      <regStateConditional regCountry="US" regState="US-WA"/>
      <regZipOrPostalCode>98101</regZipOrPostalCode>
      <regPhone>800-787-7354</regPhone>
      <seriesName>Equity Aggressive Strategy Fund</seriesName>
      <seriesId>S000001580</seriesId>
      <seriesLei>STRC63W04HIL3BL2B129</seriesLei>
      <repPdEnd>2025-10-31</repPdEnd>
      <repPdDate>2025-10-31</repPdDate>
      <isFinalFiling>N</isFinalFiling>
    </genInfo>
    <fundInfo>
      <totAssets>322037649.34</totAssets>
      <totLiabs>239203.94</totLiabs>
      <netAssets>321798445.40</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="C000004273" rtn1="2.91000000" rtn2="2.77000000" rtn3="1.18000000"/>
          <monthlyTotReturn classId="C000004274" rtn1="2.77000000" rtn2="2.76000000" rtn3="1.05000000"/>
          <monthlyTotReturn classId="C000004276" rtn1="2.93000000" rtn2="2.79000000" rtn3="1.17000000"/>
          <monthlyTotReturn classId="C000027582" rtn1="2.91000000" rtn2="2.77000000" rtn3="1.18000000"/>
          <monthlyTotReturn classId="C000137239" rtn1="2.87000000" rtn2="2.79000000" rtn3="1.15000000"/>
        </monthlyTotReturns>
        <othMon1 netRealizedGain="410337.36000000" netUnrealizedAppr="8549955.16000000"/>
        <othMon2 netRealizedGain="4282316.26000000" netUnrealizedAppr="4534710.56000000"/>
        <othMon3 netRealizedGain="106264.79000000" netUnrealizedAppr="3125364.10000000"/>
      </returnInfo>
      <mon1Flow redemption="4431804.52000000" reinvestment="0.00000000" sales="1674764.66000000"/>
      <mon2Flow redemption="4254223.90000000" reinvestment="0.00000000" sales="359639.09000000"/>
      <mon3Flow redemption="3931720.00000000" reinvestment="2167333.43000000" sales="2367449.13000000"/>



    </fundInfo>
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        <name>Global Real Estate Securities Fund</name>
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        <title>Global Real Estate Securities Fund</title>
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          <isin value="US7824787136"/>
        </identifiers>
        <balance>363073.51000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>10972081.41000000</valUSD>
        <pctVal>3.409612932207</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>
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        </identifiers>
        <balance>418777.11000000</balance>
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        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>Opportunistic Credit Fund</name>
        <lei>QMX8CVY41B3G014K7N60</lei>
        <title>Opportunistic Credit Fund</title>
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        <identifiers>
          <isin value="US7824941816"/>
        </identifiers>
        <balance>731309.00000000</balance>
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        <curCd>USD</curCd>
        <valUSD>6413579.97000000</valUSD>
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        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>Global Infrastructure Fund</name>
        <lei>YLLCHFXPBQ1D4DCY1U29</lei>
        <title>Global Infrastructure Fund</title>
        <cusip>782494249</cusip>
        <identifiers>
          <isin value="US7824942491"/>
        </identifiers>
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        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>6303141.52000000</valUSD>
        <pctVal>1.958723421477</pctVal>
        <payoffProfile>Long</payoffProfile>
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        <issuerCat>RF</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
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          <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>1145080.36000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>24332957.65000000</valUSD>
        <pctVal>7.561552269077</pctVal>
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        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
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      </invstOrSec>
      <invstOrSec>
        <name>Global Equity Fund</name>
        <lei>VTHOU527SFHXM6LQY641</lei>
        <title>Global Equity Fund</title>
        <cusip>782494447</cusip>
        <identifiers>
          <isin value="US7824944471"/>
        </identifiers>
        <balance>7933612.86000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>93695967.84000000</valUSD>
        <pctVal>29.11635192131</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>3328982.27000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>41578988.53000000</valUSD>
        <pctVal>12.92081709043</pctVal>
        <payoffProfile>Long</payoffProfile>
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        <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>2775619.72000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>48656613.62000000</valUSD>
        <pctVal>15.12021400834</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>Long Duration Bond Fund</name>
        <lei>549300VRXC77M7KZRU37</lei>
        <title>Long Duration Bond Fund</title>
        <cusip>78250F398</cusip>
        <identifiers>
          <isin value="US78250F3982"/>
        </identifiers>
        <balance>1576501.04000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>12706598.34000000</valUSD>
        <pctVal>3.948620175652</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-Asset Strategy Fund</name>
        <lei>549300X1VBO22V2H1F97</lei>
        <title>Multi-Asset Strategy Fund</title>
        <cusip>78250F547</cusip>
        <identifiers>
          <isin value="US78250F5474"/>
        </identifiers>
        <balance>1869943.92000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>22476725.97000000</valUSD>
        <pctVal>6.984721738497</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. Strategic Equity Fund</name>
        <lei>BRBLDEE3W4XF96JMJI77</lei>
        <title>U.S. Strategic Equity Fund</title>
        <cusip>78250K611</cusip>
        <identifiers>
          <isin value="US78250K6111"/>
        </identifiers>
        <balance>2338862.70000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>43713343.90000000</valUSD>
        <pctVal>13.58407553699</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.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.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.c"/>
      <explntrNote note="Total returns do not reflect the deduction of sales loads and redemption fees" noteItem="B.5.a"/>
    </explntrNotes>
    <signature>
      <ncom:dateSigned>2025-11-17</ncom:dateSigned>
      <ncom:nameOfApplicant>RUSSELL INVESTMENT CO</ncom:nameOfApplicant>
      <ncom:signature>Ross Erickson</ncom:signature>
      <ncom:signerName>Ross Erickson</ncom:signerName>
      <ncom:title>Treasurer, Principal Accounting Officer and Principal Financial Officer</ncom:title>
    </signature>
  </formData>
</edgarSubmission>
