-----BEGIN PRIVACY-ENHANCED MESSAGE-----
Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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 TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB
MIC-Info: RSA-MD5,RSA,
 G18511GF6S4+W6GUTZ/cC0r1yiMbnilvYTiKqLYk2ISdDvrDWDzJ+CIwYcoXgCTP
 UyigiFddPbSxsZbMkXt7OA==

<SEC-DOCUMENT>0001019056-05-000615.txt : 20050611
<SEC-HEADER>0001019056-05-000615.hdr.sgml : 20050611
<ACCEPTANCE-DATETIME>20050603142733
ACCESSION NUMBER:		0001019056-05-000615
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20050602
FILED AS OF DATE:		20050603
DATE AS OF CHANGE:		20050603

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			TELOS CORP
		CENTRAL INDEX KEY:			0000320121
		STANDARD INDUSTRIAL CLASSIFICATION:	SERVICES-COMPUTER INTEGRATED SYSTEMS DESIGN [7373]
		IRS NUMBER:				520880974
		STATE OF INCORPORATION:			MD
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		19886 ASHBURN ROAD
		CITY:			ASHBURN
		STATE:			VA
		ZIP:			20147
		BUSINESS PHONE:		7034716000

	MAIL ADDRESS:	
		STREET 1:		19886 ASHBURN ROAD
		CITY:			ASHBURN
		STATE:			VA
		ZIP:			20147

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	C3 INC
		DATE OF NAME CHANGE:	19920703

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Costa Brava Partnership III LP
		CENTRAL INDEX KEY:			0001319959
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-08443
		FILM NUMBER:		05877040

	BUSINESS ADDRESS:	
		STREET 1:		68 HARVARD STREET
		CITY:			BROOKLINE
		STATE:			MA
		ZIP:			02445
		BUSINESS PHONE:		617-264-2844

	MAIL ADDRESS:	
		STREET 1:		68 HARVARD STREET
		CITY:			BROOKLINE
		STATE:			MA
		ZIP:			02445

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Roark, Rearden & Hamot LLC
		CENTRAL INDEX KEY:			0001319943
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-08443
		FILM NUMBER:		05877041

	BUSINESS ADDRESS:	
		STREET 1:		68 HARVARD STREET
		CITY:			BROOKLINE
		STATE:			MA
		ZIP:			02445
		BUSINESS PHONE:		617-264-2844

	MAIL ADDRESS:	
		STREET 1:		68 HARVARD STREET
		CITY:			BROOKLINE
		STATE:			MA
		ZIP:			02445

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			HAMOT SETH W
		CENTRAL INDEX KEY:			0001071036

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-08443
		FILM NUMBER:		05877042

	BUSINESS ADDRESS:	
		STREET 1:		35 HANCVOCK STREET
		CITY:			BOSTON
		STATE:			MA
		ZIP:			02108
		BUSINESS PHONE:		6172278156

	MAIL ADDRESS:	
		STREET 1:		35 HANCOCK STREET
		CITY:			BOSTON
		STATE:			MA
		ZIP:			02108

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			White Bay Capital Management LLC
		CENTRAL INDEX KEY:			0001319558
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-08443
		FILM NUMBER:		05877043

	BUSINESS ADDRESS:	
		STREET 1:		237 PARK AVENUE
		STREET 2:		C/O COSTA BRAVA PARTNERSHIP
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10017
		BUSINESS PHONE:		212-692-6395

	MAIL ADDRESS:	
		STREET 1:		237 PARK AVENUE
		STREET 2:		C/O COSTA BRAVA PARTNERSHIP
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10017

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Siegel Andrew R
		CENTRAL INDEX KEY:			0001319503

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-08443
		FILM NUMBER:		05877044

	BUSINESS ADDRESS:	
		BUSINESS PHONE:		212-692-6395

	MAIL ADDRESS:	
		STREET 1:		237 PARK AVENUE
		STREET 2:		C/O COSTA BRAVA PARTNERSHIP
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10017
</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>2005-06-02</periodOfReport>

    <issuer>
        <issuerCik>0000320121</issuerCik>
        <issuerName>TELOS CORP</issuerName>
        <issuerTradingSymbol>TLSRP</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001319503</rptOwnerCik>
            <rptOwnerName>Siegel Andrew R</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O COSTA BRAVA PARTNERSHIP III, LP</rptOwnerStreet1>
            <rptOwnerStreet2>237 PARK AVENUE, SUITE 800</rptOwnerStreet2>
            <rptOwnerCity>NEW YORK</rptOwnerCity>
            <rptOwnerState>NY</rptOwnerState>
            <rptOwnerZipCode>10017</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001319558</rptOwnerCik>
            <rptOwnerName>White Bay Capital Management LLC</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O COSTA BRAVA PARTNERSHIP III, LP</rptOwnerStreet1>
            <rptOwnerStreet2>237 PARK AVENUE, SUITE 800</rptOwnerStreet2>
            <rptOwnerCity>NEW YORK</rptOwnerCity>
            <rptOwnerState>NY</rptOwnerState>
            <rptOwnerZipCode>10017</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001071036</rptOwnerCik>
            <rptOwnerName>HAMOT SETH W</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O ROARK, REARDEN &amp; HAMOT, LLC</rptOwnerStreet1>
            <rptOwnerStreet2>420 BOYLSTON STREET, 5F</rptOwnerStreet2>
            <rptOwnerCity>BOSTON</rptOwnerCity>
            <rptOwnerState>MA</rptOwnerState>
            <rptOwnerZipCode>02116</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001319943</rptOwnerCik>
            <rptOwnerName>Roark, Rearden &amp; Hamot LLC</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>420 BOYLSTON STREET, 5F</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>BOSTON</rptOwnerCity>
            <rptOwnerState>MA</rptOwnerState>
            <rptOwnerZipCode>02116</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001319959</rptOwnerCik>
            <rptOwnerName>Costa Brava Partnership III LP</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>420 BOYLSTON STREET, 5F</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>BOSTON</rptOwnerCity>
            <rptOwnerState>MA</rptOwnerState>
            <rptOwnerZipCode>02116</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>12% Cumulative Exchangeable Redeemable Preferred Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2005-06-02</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>P</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>70000</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>7.85</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>506811</value>
                    <footnoteId id="F1"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>See Footnote</value>
                    <footnoteId id="F2"/>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
        <nonDerivativeHolding>
            <securityTitle>
                <value>12% Cumulative Exchangeable Redeemable Preferred Stock</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>14476</value>
                    <footnoteId id="F3"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value></value>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">Beneficial ownership is disclaimed by Seth Hamot, Roark, Rearden &amp; Hamot, LLC, White Bay Capital Management, LLC and Andrew R. Siegel.</footnote>
        <footnote id="F2">The shares are owned by Costa Brava Partnership III, LP.  Roark, Rearden &amp; Hamot, LLC is the sole general partner of Costa Brava Partnership III, LP and Seth Hamot is the sole member and manager of Roark, Rearden &amp; Hamot, LLC.  Pursuant to a memorandum of understanding between White Bay Capital Management, LLC and Roark, Rearden &amp; Hamot, LLC, White Bay Capital Management, LLC has the right to receive or the power to direct the receipt of dividends from or the proceeds from the sale of, the shares owned by Costa Brava Partnership III, LP.  Mr. Siegel is the sole member and manager of White Bay Capital Management, LLC.</footnote>
        <footnote id="F3">White Bay Capital Management disclaims beneficial ownership.  Costa Brava Partnership III, LP,  Roark, Rearden &amp; Hamot, LLC and Seth Hamot have no beneficial ownership in these shares.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>ANDREW R. SIEGEL, individually and as manager of White Bay Capital Management, LLC.</signatureName>
        <signatureDate>2005-06-03</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>SETH W. HAMOT, individually and as manager of Roark, Rearden &amp; Hamot, LLC, on its own behalf and as General Partner on behalf of  Costa Brava Partnership III, LP</signatureName>
        <signatureDate>2005-06-03</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
-----END PRIVACY-ENHANCED MESSAGE-----