<?xml version="1.0"?>
<ownershipDocument>
    <schemaVersion>X0201</schemaVersion>

    <documentType>4</documentType>
    <periodOfReport>2003-08-01</periodOfReport>
    <notSubjectToSection16>0</notSubjectToSection16>
    <issuer>
        <issuerCik>0000005187</issuerCik>
        <issuerName>WYETH</issuerName>
        <issuerTradingSymbol>WYE</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001187725</rptOwnerCik>
            <rptOwnerName>CARRION RICHARD L</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>POPULAR INC &amp; BANCO POPULAR DE</rptOwnerStreet1>
            <rptOwnerStreet2>209 MONZ RIVERA AVE 3RD FL PURERTO RICO</rptOwnerStreet2>
            <rptOwnerCity>HATO REY</rptOwnerCity>
            <rptOwnerState>PR</rptOwnerState>
            <rptOwnerZipCode>00918</rptOwnerZipCode>
            <rptOwnerStateDescription>PUERTO RICO</rptOwnerStateDescription>
        </reportingOwnerAddress>
            <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>
  <nonDerivativeTable>
   <nonDerivativeTransaction>
      <securityTitle>
          <value>Common Stock (Restricted Stock Trust)</value>
      </securityTitle>
      <transactionDate>
          <value>2003-08-01</value>
      </transactionDate>
      <deemedExecutionDate>
          <value>2003-08-01</value>
      </deemedExecutionDate>
      <transactionCoding>
          <transactionFormType>4</transactionFormType>
          <transactionCode>A</transactionCode>
          <equitySwapInvolved>0</equitySwapInvolved>
              <footnoteId id="F1" />
      </transactionCoding>
      <transactionTimeliness>
      <value />
      </transactionTimeliness>
      <transactionAmounts>
          <transactionShares>
              <value>800.00</value>
          </transactionShares>
          <transactionPricePerShare>
              <value>0</value>
          </transactionPricePerShare>
          <transactionAcquiredDisposedCode>
              <value>A</value>
          </transactionAcquiredDisposedCode>
      </transactionAmounts>
      <postTransactionAmounts>
          <sharesOwnedFollowingTransaction>
              <value>3294.77</value>
              <footnoteId id="F2" />
          </sharesOwnedFollowingTransaction>
      </postTransactionAmounts>
      <ownershipNature>
          <directOrIndirectOwnership>
              <value>D</value>
          </directOrIndirectOwnership>
      </ownershipNature>
   </nonDerivativeTransaction>
  </nonDerivativeTable>
  <derivativeTable>
  </derivativeTable>
<footnotes>
   <footnote id="F1">Grant of Restricted Stock under the 1994 Restricted Stock Plan for Non-Employee Directors.</footnote>
   <footnote id="F2">Includes dividend equivalents credited under the Restricted Stock Trust exempt pursuant to Rule 16a-11.</footnote>
</footnotes>
    <ownerSignature>
       <signatureName>Richard L. Carrion</signatureName>
       <signatureDate>2003-08-04</signatureDate>
    </ownerSignature>
    <ownerSignature>
       <signatureName>Garrett L. Stackman, Attorney-in-Fact</signatureName>
       <signatureDate>2003-08-04</signatureDate>
    </ownerSignature>
</ownershipDocument>

