-----BEGIN PRIVACY-ENHANCED MESSAGE-----
Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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MIC-Info: RSA-MD5,RSA,
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 oTICpJOp60sBEDVnt8FYEQ==

<SEC-DOCUMENT>0000720671-06-000042.txt : 20060731
<SEC-HEADER>0000720671-06-000042.hdr.sgml : 20060731
<ACCEPTANCE-DATETIME>20060731153647
ACCESSION NUMBER:		0000720671-06-000042
CONFORMED SUBMISSION TYPE:	4/A
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20060721
FILED AS OF DATE:		20060731
DATE AS OF CHANGE:		20060731

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			HALIFAX CORP
		CENTRAL INDEX KEY:			0000720671
		STANDARD INDUSTRIAL CLASSIFICATION:	SERVICES-COMPUTER PROGRAMMING, DATA PROCESSING, ETC. [7370]
		IRS NUMBER:				540829246
		STATE OF INCORPORATION:			VA
		FISCAL YEAR END:			0331

	BUSINESS ADDRESS:	
		STREET 1:		5250 CHEROKEE AVE
		CITY:			ALEXANDRIA
		STATE:			VA
		ZIP:			22312
		BUSINESS PHONE:		7037502202

	MAIL ADDRESS:	
		STREET 1:		5250 CHEROKEE AVENUE
		CITY:			ALEXANDRIA
		STATE:			VA
		ZIP:			22312

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	HALIFAX ENGINEERING INC/VA
		DATE OF NAME CHANGE:	19911204

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			GROVER JOHN H
		CENTRAL INDEX KEY:			0001198420

	FILING VALUES:
		FORM TYPE:		4/A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-08964
		FILM NUMBER:		06991016

	BUSINESS ADDRESS:	
		BUSINESS PHONE:		703-750-2202

	MAIL ADDRESS:	
		STREET 1:		1600 ANDERSON ROAD
		STREET 2:		SUITE 200
		CITY:			MCLEAN
		STATE:			VA
		ZIP:			22102
</SEC-HEADER>
<DOCUMENT>
<TYPE>4/A
<SEQUENCE>1
<FILENAME>primary_doc.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0202</schemaVersion>

    <documentType>4/A</documentType>

    <periodOfReport>2006-07-21</periodOfReport>

    <dateOfOriginalSubmission>2006-07-21</dateOfOriginalSubmission>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0000720671</issuerCik>
        <issuerName>HALIFAX CORP</issuerName>
        <issuerTradingSymbol>HX</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001198420</rptOwnerCik>
            <rptOwnerName>GROVER JOHN H</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>1600 ANDERSON ROAD</rptOwnerStreet1>
            <rptOwnerStreet2>SUITE 200</rptOwnerStreet2>
            <rptOwnerCity>MCLEAN</rptOwnerCity>
            <rptOwnerState>VA</rptOwnerState>
            <rptOwnerZipCode>22102</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <derivativeTable>
        <derivativeTransaction>
            <securityTitle>
                <value>OPTIONS TO PURCHASE HALIFAX CORP. COMMON STOCK</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>3</value>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2006-07-21</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>2000</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <value>2006-08-21</value>
                <footnoteId id="F1"/>
            </exerciseDate>
            <expirationDate>
                <value>2016-07-21</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>COMMON STOCK</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>2000</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>2000</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeTransaction>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">25% A YEAR BEGINNING 7/21/2007.</footnote>
    </footnotes>

    <remarks>AMENDED PRICE TO REFLECT THE FINAL CLOSING PRICE.</remarks>

    <ownerSignature>
        <signatureName>JOHN H. GROVER</signatureName>
        <signatureDate>2006-07-31</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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