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

    <documentType>4</documentType><periodOfReport>2003-08-11</periodOfReport><notSubjectToSection16>1</notSubjectToSection16>
    <issuer>
        <issuerCik>0001039684</issuerCik>
        <issuerName>ONEOK INC /NEW/</issuerName>
        <issuerTradingSymbol>OKE</issuerTradingSymbol></issuer><reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001010312</rptOwnerCik>
            <rptOwnerName>WESTAR INDUSTRIES INC</rptOwnerName>
        </reportingOwnerId>
<reportingOwnerAddress><rptOwnerStreet1>818 S. Kansas Ave.</rptOwnerStreet1><rptOwnerStreet2/><rptOwnerCity>Topeka</rptOwnerCity><rptOwnerState>KS</rptOwnerState><rptOwnerZipCode>66612</rptOwnerZipCode></reportingOwnerAddress><reportingOwnerRelationship><isDirector>0</isDirector><isOfficer>0</isOfficer><isTenPercentOwner>0</isTenPercentOwner><isOther>1</isOther><otherText>See Explanation of Responses *</otherText></reportingOwnerRelationship></reportingOwner><reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0000054507</rptOwnerCik>
            <rptOwnerName>WESTAR ENERGY INC /KS</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>818 S. KANSAS AVE.</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>TOPEKA</rptOwnerCity>
            <rptOwnerState>KS</rptOwnerState>
            <rptOwnerZipCode>66612</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
            <reportingOwnerRelationship>
<isDirector>0</isDirector><isOfficer>0</isOfficer><isTenPercentOwner>0</isTenPercentOwner><isOther>1</isOther><otherText>See Explanation of Responses *</otherText></reportingOwnerRelationship></reportingOwner><nonDerivativeTable><nonDerivativeTransaction><securityTitle><value>Common Stock, Par Value $0.01</value></securityTitle><transactionDate><value>2003-08-11</value></transactionDate><transactionCoding><transactionFormType>4</transactionFormType><transactionCode>C</transactionCode><equitySwapInvolved>0</equitySwapInvolved></transactionCoding><transactionAmounts><transactionShares><value>7894737</value></transactionShares><transactionPricePerShare><footnoteId id="F1"/></transactionPricePerShare><transactionAcquiredDisposedCode><value>A</value></transactionAcquiredDisposedCode></transactionAmounts><postTransactionAmounts><sharesOwnedFollowingTransaction><value>12609170</value></sharesOwnedFollowingTransaction></postTransactionAmounts><ownershipNature><directOrIndirectOwnership><value>D</value><footnoteId id="F2"/></directOrIndirectOwnership><natureOfOwnership><value/></natureOfOwnership></ownershipNature></nonDerivativeTransaction><nonDerivativeTransaction><securityTitle><value>Common Stock, Par Value $0.01</value></securityTitle><transactionDate><value>2003-08-11</value></transactionDate><transactionCoding><transactionFormType>4</transactionFormType><transactionCode>S</transactionCode><equitySwapInvolved>0</equitySwapInvolved><footnoteId id="F3"/></transactionCoding><transactionAmounts><transactionShares><value>9500000</value></transactionShares><transactionPricePerShare><value>19.00</value></transactionPricePerShare><transactionAcquiredDisposedCode><value>D</value></transactionAcquiredDisposedCode></transactionAmounts><postTransactionAmounts><sharesOwnedFollowingTransaction><value>3109170</value></sharesOwnedFollowingTransaction></postTransactionAmounts><ownershipNature><directOrIndirectOwnership><value>D</value><footnoteId id="F2"/></directOrIndirectOwnership><natureOfOwnership><value/></natureOfOwnership></ownershipNature></nonDerivativeTransaction><nonDerivativeTransaction><securityTitle><value>Common Stock, Par Value $0.01</value></securityTitle><transactionDate><value>2003-08-11</value></transactionDate><transactionCoding><transactionFormType>4</transactionFormType><transactionCode>S</transactionCode><equitySwapInvolved>0</equitySwapInvolved><footnoteId id="F4"/></transactionCoding><transactionAmounts><transactionShares><value>2631579</value></transactionShares><transactionPricePerShare><value>19.00</value></transactionPricePerShare><transactionAcquiredDisposedCode><value>D</value></transactionAcquiredDisposedCode></transactionAmounts><postTransactionAmounts><sharesOwnedFollowingTransaction><value>477591</value><footnoteId id="F5"/></sharesOwnedFollowingTransaction></postTransactionAmounts><ownershipNature><directOrIndirectOwnership><value>D</value></directOrIndirectOwnership><natureOfOwnership><value/></natureOfOwnership></ownershipNature></nonDerivativeTransaction></nonDerivativeTable><derivativeTable><derivativeTransaction><securityTitle><value>$0.925 Series D Non-Cumulative Convertible Preferred Stock</value></securityTitle><conversionOrExercisePrice><footnoteId id="F1"/></conversionOrExercisePrice><transactionDate><value>2003-08-11</value></transactionDate><transactionCoding><transactionFormType>4</transactionFormType><transactionCode>C</transactionCode><equitySwapInvolved>0</equitySwapInvolved></transactionCoding><transactionAmounts><transactionShares><value>7894737</value></transactionShares><transactionPricePerShare><footnoteId id="F1"/></transactionPricePerShare><transactionAcquiredDisposedCode><value>D</value></transactionAcquiredDisposedCode></transactionAmounts><exerciseDate><footnoteId id="F6"/></exerciseDate><expirationDate><footnoteId id="F7"/></expirationDate><underlyingSecurity><underlyingSecurityTitle><value>Common Stock, Par Value $0.01</value></underlyingSecurityTitle><underlyingSecurityShares><value>7894737</value></underlyingSecurityShares></underlyingSecurity><postTransactionAmounts><sharesOwnedFollowingTransaction><value>13920649</value></sharesOwnedFollowingTransaction></postTransactionAmounts><ownershipNature><directOrIndirectOwnership><value>D</value></directOrIndirectOwnership><natureOfOwnership><value/></natureOfOwnership></ownershipNature></derivativeTransaction></derivativeTable><footnotes><footnote id="F1">Preferred shares were converted on a one for one basis.</footnote><footnote id="F2">Shares were held directly by Westar Industries and indirectly by Westar Energy.  See Explanation of Responses. *</footnote><footnote id="F3">Shares were sold in a public offering.</footnote><footnote id="F4">Shares were sold to the Issuer.</footnote><footnote id="F5">Shares were held directly by Westar Energy, Inc.  See Explanation of Responses. *</footnote><footnote id="F6">Shares may be converted into common stock only in the event that a dividend threshold is met with respect to the underlying common stock or in connection with a transfer to a third party as specified in agreements with the Issuer.  Conditions precedent to conversion of the preferred stock are not expected to be met within the next 60 days.</footnote><footnote id="F7">Not applicable.</footnote></footnotes><remarks>*  Westar Industries, Inc. (&quot;Westar Industries&quot;), a wholly owned subsidiary of Westar Energy, Inc. (&quot;Westar Energy&quot;), was the direct holder of the shares that are the subject of this report.  Subsequent to the transactions reported herein, Westar Industries transferred ownership of the remaining shares to Westar Energy.  According to agreements with the Issuer, Westar Energy may not hold common stock in excess of its current holdings (0.6% of common stock outstanding). Westar Energy's remaining holdings of the Issuer's convertible preferred stock is not convertible into common stock within the next 60 days .</remarks><ownerSignature><signatureName>Cynthia S. Couch, Assistant Secretary of Westar Industries, Inc.</signatureName><signatureDate>2003-08-13</signatureDate></ownerSignature><ownerSignature><signatureName>Larry D. Irick, Vice President, General Counsel and Corporate Secretary of Westar Energy, Inc.</signatureName><signatureDate>2003-08-13</signatureDate></ownerSignature></ownershipDocument>

