<SUBMISSION>
<ACCESSION-NUMBER>0001261517-04-000002
<TYPE>4
<PUBLIC-DOCUMENT-COUNT>1
<PERIOD>20040621
<FILING-DATE>20040622
<ISSUER>
<COMPANY-DATA>
<CONFORMED-NAME>CENUCO INC
<CIK>0000843494
<ASSIGNED-SIC>6770
<IRS-NUMBER>752228820
<STATE-OF-INCORPORATION>DE
<FISCAL-YEAR-END>0630
</COMPANY-DATA>
<BUSINESS-ADDRESS>
<STREET1>6421 CONGRESS AVENUE
<STREET2>STE 201
<CITY>BOCA RATON
<STATE>FL
<ZIP>33487
<PHONE>5619944446
</BUSINESS-ADDRESS>
<MAIL-ADDRESS>
<STREET1>6421 CONGRESS AVENUE
<STREET2>STE 201
<CITY>BOCA RATON
<STATE>FL
<ZIP>33487
</MAIL-ADDRESS>
<FORMER-COMPANY>
<FORMER-CONFORMED-NAME>VIRTUAL ACADEMICS COM INC
<DATE-CHANGED>20000110
</FORMER-COMPANY>
<FORMER-COMPANY>
<FORMER-CONFORMED-NAME>DONNEBROOKE CORP
<DATE-CHANGED>19920703
</FORMER-COMPANY>
<FORMER-COMPANY>
<FORMER-CONFORMED-NAME>ALLURISTICS INC
<DATE-CHANGED>19890911
</FORMER-COMPANY>
</ISSUER>
<REPORTING-OWNER>
<OWNER-DATA>
<CONFORMED-NAME>SERLIN JORDAN DANA
<CIK>0001261517
</OWNER-DATA>
<FILING-VALUES>
<FORM-TYPE>4
<ACT>34
<FILE-NUMBER>001-32187
<FILM-NUMBER>04875071
</FILING-VALUES>
<BUSINESS-ADDRESS>
<STREET1>6421 CONGRESS AVE
<STREET2>SUITE 201
<CITY>BOCA RATON
<STATE>FL
<ZIP>33487
<PHONE>5618436622
</BUSINESS-ADDRESS>
<MAIL-ADDRESS>
<STREET1>14876 ENCLAVE LAKES DR
<CITY>DELRAY BEACH
<STATE>FL
<ZIP>33484
</MAIL-ADDRESS>
</REPORTING-OWNER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>primary_doc.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0202</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2004-06-21</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0000843494</issuerCik>
        <issuerName>CENUCO INC</issuerName>
        <issuerTradingSymbol>ICU</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001261517</rptOwnerCik>
            <rptOwnerName>SERLIN JORDAN DANA</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>14876 ENCLAVE LAKES DR</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>DELRAY BEACH</rptOwnerCity>
            <rptOwnerState>FL</rptOwnerState>
            <rptOwnerZipCode>33484</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>Chief Operating Officer</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Cenuco Common Stock</value>
                <footnoteId id="F1"/>
            </securityTitle>
            <transactionDate>
                <value>2004-06-16</value>
            </transactionDate>
            <deemedExecutionDate>
                <value>2004-06-21</value>
            </deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>D</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>20000</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>4.3</value>
                    <footnoteId id="F2"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>21780</value>
                    <footnoteId id="F3"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">Cenuco common stock grant, restricted.</footnote>
        <footnote id="F2">Stock was granted on May 13,2004 at the trading price, and was issued on June 16, 2004</footnote>
        <footnote id="F3">Not including stock option grants noted in previous filings</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>Jordan D. Serlin</signatureName>
        <signatureDate>2004-06-22</signatureDate>
    </ownerSignature>
</ownershipDocument>

</XML>
</TEXT>
</DOCUMENT>
</SUBMISSION>
