<SEC-DOCUMENT>0001240707-11-000003.txt : 20111011
<SEC-HEADER>0001240707-11-000003.hdr.sgml : 20111010
<ACCEPTANCE-DATETIME>20111011184934
ACCESSION NUMBER:		0001240707-11-000003
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20111008
FILED AS OF DATE:		20111011
DATE AS OF CHANGE:		20111011

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:			0731

	BUSINESS ADDRESS:	
		STREET 1:		11770 U.S. HIGHWAY 1
		STREET 2:		SUITE 101
		CITY:			PALM BEACH GARDENS
		STATE:			FL
		ZIP:			33408
		BUSINESS PHONE:		5616277171

	MAIL ADDRESS:	
		STREET 1:		11770 U.S. HIGHWAY 1
		STREET 2:		SUITE 101
		CITY:			PALM BEACH GARDENS
		STATE:			FL
		ZIP:			33408

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	MOBILE HOME DYNAMICS INC
		DATE OF NAME CHANGE:	19820302

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			NIELSEN STEVEN E
		CENTRAL INDEX KEY:			0001240707

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-10613
		FILM NUMBER:		111136325

	MAIL ADDRESS:	
		STREET 1:		11770 U.S. HIGHWAY 1
		STREET 2:		SUITE 101
		CITY:			PALM BEACH GARDENS
		STATE:			FL
		ZIP:			33408
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>edgar.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0304</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2011-10-08</periodOfReport>

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

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001240707</rptOwnerCik>
            <rptOwnerName>NIELSEN STEVEN E</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>11770 U.S. HIGHWAY 1</rptOwnerStreet1>
            <rptOwnerStreet2>SUITE 101</rptOwnerStreet2>
            <rptOwnerCity>PALM BEACH GARDENS</rptOwnerCity>
            <rptOwnerState>FL</rptOwnerState>
            <rptOwnerZipCode>33408</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>President &amp; CEO</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2011-10-08</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>2426</value>
                    <footnoteId id="F1"/>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                    <footnoteId id="F2"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>571879</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value></value>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">Restricted stock units were awarded, subject to attaining applicable performance goals, under the Dycom Industries, Inc. 2003 Long-Term Incentive Plan, in October 2009.  Each restricted stock unit represents a contingent right to acquire one (1) share of Dycom Industries, Inc. common stock, par value $0.33 1/3 per share.  These shares were awarded in settlement of the restricted stock units that vested on October 8, 2011 based on the satisfaction of the pre-established performance measures set forth in the award documents; which are based on (i) operating earnings before asset impairments, amounts for performance unit or performance share compensation and amounts associated with the extinguishment of debt or termination of debt agreements and (ii) the ratio of operating cash flow to net income before asset impairments, amounts for performance unit or performance share compensation and amounts associated with the extinguishment of debt or termination of debt agreements.</footnote>
        <footnote id="F2">No consideration was paid for the shares.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>Richard B. Vilsoet, Attorney-in-Fact for                     Steven E. Nielsen</signatureName>
        <signatureDate>2011-10-11</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
