<?xml version="1.0" encoding="UTF-8"?><edgarSubmission xmlns="http://www.sec.gov/edgar/ownership" xmlns:com="http://www.sec.gov/edgar/common">
  <headerData>
    <submissionType>144</submissionType>
    <filerInfo>
      <filer>
        <filerCredentials>
          <cik>0001190105</cik>
          <ccc>XXXXXXXX</ccc>
        </filerCredentials>
      </filer>
      <liveTestFlag>LIVE</liveTestFlag>



    </filerInfo>
  </headerData>
  <formData>
    <issuerInfo>
      <issuerCik>0001002910</issuerCik>
      <issuerName>AMEREN CORP</issuerName>
      <secFileNumber>001-14756</secFileNumber>
      <issuerAddress>
        <com:street1>1901 CHOUTEAU AVE</com:street1>
        <com:street2>MC 1310</com:street2>
        <com:city>ST LOUIS</com:city>
        <com:stateOrCountry>MO</com:stateOrCountry>
        <com:zipCode>63166-6149</com:zipCode>
      </issuerAddress>
      <issuerContactPhone>314-621-3222</issuerContactPhone>
      <nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>MOEHN MICHAEL L</nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>
      <relationshipsToIssuer>
        <relationshipToIssuer>Vice President of Subsidiary</relationshipToIssuer>
      </relationshipsToIssuer>
    </issuerInfo>
    <securitiesInformation>
      <securitiesClassTitle>Common</securitiesClassTitle>
      <brokerOrMarketmakerDetails>
        <name>Wells Fargo Advisors</name>
        <address>
          <com:street1>1 N. Jefferson Ave</com:street1>
          <com:city>St. Louis</com:city>
          <com:stateOrCountry>MO</com:stateOrCountry>
          <com:zipCode>63103</com:zipCode>
        </address>
      </brokerOrMarketmakerDetails>
      <noOfUnitsSold>3080</noOfUnitsSold>
      <aggregateMarketValue>248789.39</aggregateMarketValue>
      <noOfUnitsOutstanding>262609472</noOfUnitsOutstanding>
      <approxSaleDate>06/01/2023</approxSaleDate>
      <securitiesExchangeName>NYSE</securitiesExchangeName>
    </securitiesInformation>
    <securitiesToBeSold>
      <securitiesClassTitle>Common</securitiesClassTitle>
      <acquiredDate>06/01/2023</acquiredDate>
      <natureOfAcquisitionTransaction>Long Term Incentive Plan</natureOfAcquisitionTransaction>
      <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
      <isGiftTransaction>N</isGiftTransaction>
      <amountOfSecuritiesAcquired>3080</amountOfSecuritiesAcquired>
      <paymentDate>06/01/2023</paymentDate>
      <natureOfPayment>n/a</natureOfPayment>
    </securitiesToBeSold>
    <nothingToReportFlagOnSecuritiesSoldInPast3Months>N</nothingToReportFlagOnSecuritiesSoldInPast3Months>
    <securitiesSoldInPast3Months>
      <sellerDetails>
        <name>MICHAEL L MOEHN</name>
        <address>
          <com:street1>1901 CHOUTEAU AVE</com:street1>
          <com:street2>MC 1310</com:street2>
          <com:city>St. Louis</com:city>
          <com:stateOrCountry>MO</com:stateOrCountry>
          <com:zipCode>63166</com:zipCode>
        </address>
      </sellerDetails>
      <securitiesClassTitle>Ameren</securitiesClassTitle>
      <saleDate>03/01/2023</saleDate>
      <amountOfSecuritiesSold>3050</amountOfSecuritiesSold>
      <grossProceeds>249273.47</grossProceeds>
    </securitiesSoldInPast3Months>
    <noticeSignature>
      <noticeDate>06/01/2023</noticeDate>
      <planAdoptionDates>
        <planAdoptionDate>12/14/2021</planAdoptionDate>
      </planAdoptionDates>
      <signature>Michael L Moehn</signature>
    </noticeSignature>
  </formData>
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144
0001190105
XXXXXXXX
LIVE
0001002910
AMEREN CORP
001-14756
1901 CHOUTEAU AVE
MC 1310
ST LOUIS
MO
63166-6149
314-621-3222
MOEHN MICHAEL L
Vice President of Subsidiary
Common
Wells Fargo Advisors
1 N. Jefferson Ave
St. Louis
MO
63103
3080
248789.39
262609472
06/01/2023
NYSE
Common
06/01/2023
Long Term Incentive Plan
Issuer
N
3080
06/01/2023
n/a
N
MICHAEL L MOEHN
1901 CHOUTEAU AVE
MC 1310
St. Louis
MO
63166
Ameren
03/01/2023
3050
249273.47
06/01/2023
12/14/2021
Michael L Moehn