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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,
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 i4RUYF/gI63mVDRP9ipeYQ==

<SEC-DOCUMENT>0000866273-05-000026.txt : 20051026
<SEC-HEADER>0000866273-05-000026.hdr.sgml : 20051026
<ACCEPTANCE-DATETIME>20051026112923
ACCESSION NUMBER:		0000866273-05-000026
CONFORMED SUBMISSION TYPE:	3
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20051021
FILED AS OF DATE:		20051026
DATE AS OF CHANGE:		20051026

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			MATRIX SERVICE CO
		CENTRAL INDEX KEY:			0000866273
		STANDARD INDUSTRIAL CLASSIFICATION:	CONSTRUCTION SPECIAL TRADE CONTRACTORS [1700]
		IRS NUMBER:				731352174
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			0531

	BUSINESS ADDRESS:	
		STREET 1:		10701 E UTE ST
		CITY:			TULSA
		STATE:			OK
		ZIP:			74116-1517
		BUSINESS PHONE:		9188388822

	MAIL ADDRESS:	
		STREET 1:		10701 E UTE ST
		CITY:			TULSA
		STATE:			OK
		ZIP:			74116-1517

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Tippeconnic David James
		CENTRAL INDEX KEY:			0001342431

	FILING VALUES:
		FORM TYPE:		3
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-15461
		FILM NUMBER:		051156137

	BUSINESS ADDRESS:	
		BUSINESS PHONE:		972-247-7111

	MAIL ADDRESS:	
		STREET 1:		2646 RODNEY LANE
		CITY:			DALLAS
		STATE:			TX
		ZIP:			75229
</SEC-HEADER>
<DOCUMENT>
<TYPE>3
<SEQUENCE>1
<FILENAME>primary_doc.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0202</schemaVersion>

    <documentType>3</documentType>

    <periodOfReport>2005-10-21</periodOfReport>

    <noSecuritiesOwned>1</noSecuritiesOwned>

    <issuer>
        <issuerCik>0000866273</issuerCik>
        <issuerName>MATRIX SERVICE CO</issuerName>
        <issuerTradingSymbol>MTRX</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001342431</rptOwnerCik>
            <rptOwnerName>Tippeconnic David James</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>2646 RODNEY LANE</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>DALLAS</rptOwnerCity>
            <rptOwnerState>TX</rptOwnerState>
            <rptOwnerZipCode>75229</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <ownerSignature>
        <signatureName>David J. Tippeconnic</signatureName>
        <signatureDate>2005-10-26</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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