-----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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 8BiwL7ZjJdmPv6GSj46X9Q==

<SEC-DOCUMENT>0001219038-04-000008.txt : 20041028
<SEC-HEADER>0001219038-04-000008.hdr.sgml : 20041028
<ACCEPTANCE-DATETIME>20041028152424
ACCESSION NUMBER:		0001219038-04-000008
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20041026
FILED AS OF DATE:		20041028
DATE AS OF CHANGE:		20041028

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			CONCORD COMMUNICATIONS INC
		CENTRAL INDEX KEY:			0000915290
		STANDARD INDUSTRIAL CLASSIFICATION:	SERVICES-PREPACKAGED SOFTWARE [7372]
		IRS NUMBER:				042710876
		STATE OF INCORPORATION:			MA
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		600 NICKERSON RD
		CITY:			MARLBORO
		STATE:			MA
		ZIP:			01752
		BUSINESS PHONE:		5084604646

	MAIL ADDRESS:	
		STREET 1:		600 NICKERSON RD
		CITY:			MARLBORO
		STATE:			MA
		ZIP:			01752

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			BATT DOUGLAS A
		CENTRAL INDEX KEY:			0001211150

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-23067
		FILM NUMBER:		041102502

	BUSINESS ADDRESS:	
		STREET 1:		C/O CONCORD COMMUNICATIONS
		STREET 2:		600 NICKERSON RD
		CITY:			MARLBORO
		STATE:			MA
		ZIP:			01752
		BUSINESS PHONE:		5084864422

	MAIL ADDRESS:	
		STREET 1:		C/O CONCORD COMMUNICATIONS
		STREET 2:		600 NICKERSON RD
		CITY:			MARLBORO
		STATE:			MA
		ZIP:			01752
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>edgar.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0202</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2004-10-26</periodOfReport>

    <issuer>
        <issuerCik>0000915290</issuerCik>
        <issuerName>CONCORD COMMUNICATIONS INC</issuerName>
        <issuerTradingSymbol>CCRD</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001211150</rptOwnerCik>
            <rptOwnerName>BATT DOUGLAS A</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O CONCORD COMMUNICATIONS, INC.</rptOwnerStreet1>
            <rptOwnerStreet2>600 NICKERSON ROAD</rptOwnerStreet2>
            <rptOwnerCity>MARLBORO</rptOwnerCity>
            <rptOwnerState>MA</rptOwnerState>
            <rptOwnerZipCode>01752</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>EVP &amp; General Counsel</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <derivativeTable>
        <derivativeTransaction>
            <securityTitle>
                <value>Employee Stock Option (par value $.01 per share)</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>40.563</value>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2004-10-26</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>D</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
                <footnoteId id="F1"/>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>10000</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>3.40</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <value>2001-07-05</value>
            </exerciseDate>
            <expirationDate>
                <value>2008-07-03</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>10000</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>0</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value></value>
                </natureOfOwnership>
            </ownershipNature>
        </derivativeTransaction>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">This disposition was made in connection with an offer to purchase any and all outstanding options to purchase shares of common stock of Concord Communications, Inc. with an exercise price of $25.00 or more per share granted under Concord's 1997 Stock Plan upon the terms and subject to the conditions set forth in an Offer to Purchase dated September 27, 2004 and attached as an exhibit to a Schedule TO, which was filed with the Securities and Exchange Commission on September 27, 2004.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>Michael F. Crowley, III Pursuant to a Power of Attorney for Douglas A. Batt</signatureName>
        <signatureDate>2004-10-28</signatureDate>
    </ownerSignature>
</ownershipDocument>

</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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