<SUBMISSION>
<ACCESSION-NUMBER>0001140361-05-004026
<TYPE>3
<PUBLIC-DOCUMENT-COUNT>1
<PERIOD>20050520
<FILING-DATE>20050526
<DATE-OF-FILING-DATE-CHANGE>20050526
<ISSUER>
<COMPANY-DATA>
<CONFORMED-NAME>CENUCO INC
<CIK>0000843494
<ASSIGNED-SIC>4899
<IRS-NUMBER>752228820
<STATE-OF-INCORPORATION>DE
<FISCAL-YEAR-END>0228
</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>Taylor Kenneth D
<CIK>0001328431
</OWNER-DATA>
<FILING-VALUES>
<FORM-TYPE>3
<ACT>34
<FILE-NUMBER>001-32187
<FILM-NUMBER>05859653
</FILING-VALUES>
<BUSINESS-ADDRESS>
<PHONE>212-289-3892
</BUSINESS-ADDRESS>
<MAIL-ADDRESS>
<STREET1>1775 YORK AVENUE
<STREET2>APT 29H
<CITY>NEW YORK
<STATE>NY
<ZIP>10128
</MAIL-ADDRESS>
</REPORTING-OWNER>
<DOCUMENT>
<TYPE>3
<SEQUENCE>1
<FILENAME>doc1.xml
<DESCRIPTION>FORM 3
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0202</schemaVersion>

    <documentType>3</documentType>

    <periodOfReport>2005-05-20</periodOfReport>

    <noSecuritiesOwned>0</noSecuritiesOwned>

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

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001328431</rptOwnerCik>
            <rptOwnerName>Taylor Kenneth D</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>1775 YORK AVENUE</rptOwnerStreet1>
            <rptOwnerStreet2>APT 29H</rptOwnerStreet2>
            <rptOwnerCity>NEW YORK</rptOwnerCity>
            <rptOwnerState>NY</rptOwnerState>
            <rptOwnerZipCode>10128</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle></officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <derivativeTable>
        <derivativeHolding>
            <securityTitle>
                <value>Series A Junior Participating Preferred Stock</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>0.0</value>
            </conversionOrExercisePrice>
            <exerciseDate>
                <value>1988-08-08</value>
                <footnoteId id="F1"/>
            </exerciseDate>
            <expirationDate>
                <value>1988-08-08</value>
                <footnoteId id="F2"/>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>3711000</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>By MarNan LLC (36.33%) as custodian for Mark I. Massad Jr.</value>
                </natureOfOwnership>
            </ownershipNature>
        </derivativeHolding>
        <derivativeHolding>
            <securityTitle>
                <value>Series A Junior Participating Preferred Stock</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>0.0</value>
            </conversionOrExercisePrice>
            <exerciseDate>
                <value>1988-08-08</value>
                <footnoteId id="F1"/>
            </exerciseDate>
            <expirationDate>
                <value>1988-08-08</value>
                <footnoteId id="F2"/>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>3711000</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>By MarNan LLC (36.33%) as custodian for Anna Marie Massad</value>
                </natureOfOwnership>
            </ownershipNature>
        </derivativeHolding>
        <derivativeHolding>
            <securityTitle>
                <value>Series A Junior Participating Preferred Stock</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>0.0</value>
            </conversionOrExercisePrice>
            <exerciseDate>
                <value>1988-08-08</value>
                <footnoteId id="F1"/>
            </exerciseDate>
            <expirationDate>
                <value>1988-08-08</value>
                <footnoteId id="F2"/>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>1236745</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>By MarNan LLC</value>
                </natureOfOwnership>
            </ownershipNature>
        </derivativeHolding>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">Conversion of Series A Junior Participating Preferred Stock into Common Stock requires stockholder approval</footnote>
        <footnote id="F2">None</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ K.D. Taylor</signatureName>
        <signatureDate>2005-05-25</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SUBMISSION>
