-----BEGIN PRIVACY-ENHANCED MESSAGE-----
Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
Originator-Key-Asymmetric:
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 TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB
MIC-Info: RSA-MD5,RSA,
 TEOsk3uGQjbJsI89P3Dm5ZBcMV8mumlD9HT5gSlFmkzN4jJdyRmAaIokQ6Fg0JYO
 JKcmzVESIKv6W6ePeLQbww==

<SEC-DOCUMENT>0001209191-09-040365.txt : 20090812
<SEC-HEADER>0001209191-09-040365.hdr.sgml : 20090812
<ACCEPTANCE-DATETIME>20090812185154
ACCESSION NUMBER:		0001209191-09-040365
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20090805
FILED AS OF DATE:		20090812
DATE AS OF CHANGE:		20090812

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Leto James Todd
		CENTRAL INDEX KEY:			0001464126

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-19394
		FILM NUMBER:		091008147

	MAIL ADDRESS:	
		STREET 1:		GTSI CORP.
		STREET 2:		2553 DULLES VIEW DRIVE, SUITE 100
		CITY:			HERNDON
		STATE:			VA
		ZIP:			20171

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			GTSI CORP
		CENTRAL INDEX KEY:			0000850483
		STANDARD INDUSTRIAL CLASSIFICATION:	WHOLESALE-COMPUTER & PERIPHERAL EQUIPMENT & SOFTWARE [5045]
		IRS NUMBER:				541248422
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		2553 DULLES VIEW DRIVE
		STREET 2:		SUITE 100
		CITY:			HERNDON
		STATE:			VA
		ZIP:			20171-5219
		BUSINESS PHONE:		703-502-2000

	MAIL ADDRESS:	
		STREET 1:		2553 DULLES VIEW DRIVE
		STREET 2:		SUITE 100
		CITY:			HERNDON
		STATE:			VA
		ZIP:			20171-5219
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>doc4.xml
<DESCRIPTION>FORM 4 SUBMISSION
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0303</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2009-08-05</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0000850483</issuerCik>
        <issuerName>GTSI CORP</issuerName>
        <issuerTradingSymbol>GTSI</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001464126</rptOwnerCik>
            <rptOwnerName>Leto James Todd</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O GTSI CORP.</rptOwnerStreet1>
            <rptOwnerStreet2>2553 DULLES VIEW DRIVE, SUITE 100</rptOwnerStreet2>
            <rptOwnerCity>HERNDON</rptOwnerCity>
            <rptOwnerState>VA</rptOwnerState>
            <rptOwnerZipCode>20171</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>SVP, Sales &amp; Marketing</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <derivativeTable>
        <derivativeTransaction>
            <securityTitle>
                <value>Common Stock (Right to Buy)</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>6.40</value>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2009-08-05</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>50000</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0.00</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <value>2010-08-05</value>
                <footnoteId id="F1"/>
            </exerciseDate>
            <expirationDate>
                <value>2016-08-05</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>50000</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>115000</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeTransaction>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">Options vest as follows:  16,667 on 1st anniversary of Grant Date/August 5,2010 - 16,666 on 2nd anniversary of Grant Date/August 5,2011, and 16,667 on 3rd anniversary of Grant Date/August 5,2012.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ James Todd Leto</signatureName>
        <signatureDate>2009-08-12</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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