-----BEGIN PRIVACY-ENHANCED MESSAGE-----
Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
Originator-Key-Asymmetric:
 MFgwCgYEVQgBAQICAf8DSgAwRwJAW2sNKK9AVtBzYZmr6aGjlWyK3XmZv3dTINen
 TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB
MIC-Info: RSA-MD5,RSA,
 KIZrvPVFtwyDHOT8qS6n+7hcUcHQWbrmbHku/BuWtE/kz1zZg6Ft5iPJKyyd/SbB
 TzDytGE0i7h5+XL1qtgniQ==

<SEC-DOCUMENT>0001240714-04-000007.txt : 20041124
<SEC-HEADER>0001240714-04-000007.hdr.sgml : 20041124
<ACCEPTANCE-DATETIME>20041124190354
ACCESSION NUMBER:		0001240714-04-000007
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20041123
FILED AS OF DATE:		20041124
DATE AS OF CHANGE:		20041124

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			WERNER TONY G
		CENTRAL INDEX KEY:			0001240714

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-10613
		FILM NUMBER:		041168418

	BUSINESS ADDRESS:	
		STREET 1:		DYCOM INDUSTRIES INC
		STREET 2:		4440 PGA BLVD.
		CITY:			PALM BEACH GARDEN
		STATE:			FL
		ZIP:			33410

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			DYCOM INDUSTRIES INC
		CENTRAL INDEX KEY:			0000067215
		STANDARD INDUSTRIAL CLASSIFICATION:	WATER, SEWER, PIPELINE, COMM AND POWER LINE CONSTRUCTION [1623]
		IRS NUMBER:				591277135
		STATE OF INCORPORATION:			FL
		FISCAL YEAR END:			0729

	BUSINESS ADDRESS:	
		STREET 1:		4440 PGA BLVD. STE 500
		STREET 2:		FIRST UNION CENTER
		CITY:			PALM BEACH GARDENS
		STATE:			FL
		ZIP:			33410
		BUSINESS PHONE:		5616277171

	MAIL ADDRESS:	
		STREET 1:		4440 PGA BLVD STE 500
		STREET 2:		FIRST UNION CENTER
		CITY:			PALM BEACH GARDENS
		STATE:			FL
		ZIP:			33410

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	MOBILE HOME DYNAMICS INC
		DATE OF NAME CHANGE:	19820302
</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>2004-11-23</periodOfReport>

    <issuer>
        <issuerCik>0000067215</issuerCik>
        <issuerName>DYCOM INDUSTRIES INC</issuerName>
        <issuerTradingSymbol>DY</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001240714</rptOwnerCik>
            <rptOwnerName>WERNER TONY G</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>4440 PGA BOULEVARD, SUITE 500</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>PALM BEACH GARDENS</rptOwnerCity>
            <rptOwnerState>FL</rptOwnerState>
            <rptOwnerZipCode>33410</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <derivativeTable>
        <derivativeTransaction>
            <securityTitle>
                <value>Non-Qualified Stock Option (right to buy)</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>29.80</value>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2004-11-23</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>2000</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                    <footnoteId id="F2"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <value>2005-11-23</value>
                <footnoteId id="F1"/>
            </exerciseDate>
            <expirationDate>
                <value>2014-11-23</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>
                <natureOfOwnership>
                    <value></value>
                </natureOfOwnership>
            </ownershipNature>
        </derivativeTransaction>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">The option vests in four equal annual installments beginning on November 23, 2005.</footnote>
        <footnote id="F2">No consideration was paid for the derivative security.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>Michael K. Miller,  Attorney-in-Fact for Tony G. Werner</signatureName>
        <signatureDate>2004-11-24</signatureDate>
    </ownerSignature>
</ownershipDocument>

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