-----BEGIN PRIVACY-ENHANCED MESSAGE-----
Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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 TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB
MIC-Info: RSA-MD5,RSA,
 PECHlcKg6ncO8XSd8stMb0kmev0cmq5y2fYUf1yHDq8jJp0sP3NqI4mSkzq5lscI
 3NzrzpS3FJbC7MMjl4xwaw==

<SEC-DOCUMENT>0001324434-06-000001.txt : 20060202
<SEC-HEADER>0001324434-06-000001.hdr.sgml : 20060202
<ACCEPTANCE-DATETIME>20060202124708
ACCESSION NUMBER:		0001324434-06-000001
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20051025
FILED AS OF DATE:		20060202
DATE AS OF CHANGE:		20060202

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			McGrath Michael E
		CENTRAL INDEX KEY:			0001300864

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-28030
		FILM NUMBER:		06572515

	BUSINESS ADDRESS:	
		BUSINESS PHONE:		469  357-1000

	MAIL ADDRESS:	
		STREET 1:		11701 LUNA ROAD
		CITY:			DALLAS
		STATE:			TX
		ZIP:			75234

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			I2 TECHNOLOGIES INC
		CENTRAL INDEX KEY:			0001009304
		STANDARD INDUSTRIAL CLASSIFICATION:	SERVICES-PREPACKAGED SOFTWARE [7372]
		IRS NUMBER:				752294945
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		ONE 12 PLACE
		STREET 2:		11701 LUNA RD
		CITY:			DALLAS
		STATE:			TX
		ZIP:			75234
		BUSINESS PHONE:		4643571000

	MAIL ADDRESS:	
		STREET 1:		ONE 12 PLACE
		STREET 2:		11701 LUNA RD
		CITY:			DALLAS
		STATE:			TX
		ZIP:			75234
</SEC-HEADER>
<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>2005-10-25</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001009304</issuerCik>
        <issuerName>I2 TECHNOLOGIES INC</issuerName>
        <issuerTradingSymbol>itwo</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001300864</rptOwnerCik>
            <rptOwnerName>McGrath Michael E</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>11701 LUNA ROAD</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>DALLAS</rptOwnerCity>
            <rptOwnerState>TX</rptOwnerState>
            <rptOwnerZipCode>75234</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>President &amp; CEO</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <derivativeTable>
        <derivativeTransaction>
            <securityTitle>
                <value>Stock Options (Right to Buy)</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>13.82</value>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2005-10-25</value>
            </transactionDate>
            <deemedExecutionDate>
                <value>2005-10-25</value>
            </deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>480000</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <value>2006-05-31</value>
                <footnoteId id="F1"/>
            </exerciseDate>
            <expirationDate>
                <value>2015-10-24</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>480000</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>480000</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeTransaction>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">Award of stock option grant pursuant to the i2 Technologies, Inc. 1995 Stock Option/Stock Issuance Plan.  Such award shall vest and become exercisable as to 100,000 of the underlying shares each on May 31, 2006, August 31, 2006, November 30, 2006 and February 28, 2007; the remaining shares shall vest and become exercisable on May 31, 2007.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>Robin Gunter, Attorney-in-Fact</signatureName>
        <signatureDate>2006-02-02</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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