-----BEGIN PRIVACY-ENHANCED MESSAGE-----
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,
 Wa5tjIv8o2Hxt4Kbo6gLuXojAMFnomciokZ/Bb7e7MgDG9/x8gaEOodZAMPo7hI6
 oEHttLvTJK1llSLdMkeRXA==

<SEC-DOCUMENT>0001179110-06-006037.txt : 20060313
<SEC-HEADER>0001179110-06-006037.hdr.sgml : 20060313
<ACCEPTANCE-DATETIME>20060313133828
ACCESSION NUMBER:		0001179110-06-006037
CONFORMED SUBMISSION TYPE:	3
PUBLIC DOCUMENT COUNT:		2
CONFORMED PERIOD OF REPORT:	20060309
FILED AS OF DATE:		20060313
DATE AS OF CHANGE:		20060313

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			TCW CONVERTIBLE SECURITIES FUND INC
		CENTRAL INDEX KEY:			0000809559
		IRS NUMBER:				930939398
		STATE OF INCORPORATION:			MD
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		865 S FIGUEROA ST STE 1800
		CITY:			LOS ANGELES
		STATE:			CA
		ZIP:			90071
		BUSINESS PHONE:		2132440000

	MAIL ADDRESS:	
		STREET 1:		865 S. FIGUEROA STREET,
		STREET 2:		SUITE 1800
		CITY:			LOSANGELES
		STATE:			CA
		ZIP:			90017

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			GUNDLACH JEFFREY E
		CENTRAL INDEX KEY:			0001198619

	FILING VALUES:
		FORM TYPE:		3
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	811-04980
		FILM NUMBER:		06681568

	BUSINESS ADDRESS:	
		STREET 1:		TCW INVESTMENT MANAGEMENT CO.
		STREET 2:		865 S. FIGUEROA ST.
		CITY:			LOS ANGELES
		STATE:			CA
		ZIP:			90017
</SEC-HEADER>
<DOCUMENT>
<TYPE>3
<SEQUENCE>1
<FILENAME>edgar.xml
<DESCRIPTION>FORM 3 -
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0202</schemaVersion>

    <documentType>3</documentType>

    <periodOfReport>2006-03-09</periodOfReport>

    <noSecuritiesOwned>0</noSecuritiesOwned>

    <issuer>
        <issuerCik>0000809559</issuerCik>
        <issuerName>TCW CONVERTIBLE SECURITIES FUND INC</issuerName>
        <issuerTradingSymbol>TSI</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001198619</rptOwnerCik>
            <rptOwnerName>GUNDLACH JEFFREY E</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>TCW STRATEGIC INCOME FUND, INC.</rptOwnerStreet1>
            <rptOwnerStreet2>865 S. FIGUEROA STREET, SUITE 1800</rptOwnerStreet2>
            <rptOwnerCity>LOS ANGELES</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>90017</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>Senior V.P.</officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>0</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
    </nonDerivativeTable>

    <derivativeTable></derivativeTable>

    <footnotes></footnotes>

    <ownerSignature>
        <signatureName>Philip K. Holl for Jeffrey E. Gundlach by POA dated 3-9-06</signatureName>
        <signatureDate>2006-03-13</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>EX-24
<SEQUENCE>2
<FILENAME>ex24jeg.txt
<TEXT>
EXECUTION COPY
POWER OF ATTORNEY
TCW Strategic Income Fund, Inc.
        The undersigned hereby constitutes and appoints Michael
E. Cahill, Linda D. Barker, Harold H. Henderson, Philip K. Holl,
 James Killmond, Earl Lariscy, Sean Plater, Michael R. Quinn and
Lazarus N. Sun, and each of them, his or her true and lawful
attorneys-in-fact and agents, each of them with full power of
substitution and resubstitution, for him or her and in his or her
name, place and stead, in any and all capacities, to sign any or
all reports and forms required under Section 16 of the Securities
and Exchange Act of 1934, as amended, including but not limited
to all Form 3, Form 4 and Form 5 filings, and to file the same
with the Securities and Exchange Commission (Commission),
granting unto each of said attorneys-in-fact and agents full
power and authority to do and perform each and every act and
thing necessary or appropriate to be done with respect to such
reports and forms or any amendments or supplements thereto in and
about the premises, as fully to all intents and purposes as he or
she might or could do in person, hereby ratifying and confirming
all that any of said attorneys-in-fact and agents or his or her
substitute or substitutes, may lawfully do or cause to be done by
virtue hereof.
        This Power of Attorney may be terminated at any time by
the undersigned by written notice to each of the attorneys-in-
fact and the Commission; provided, however, that such termination
shall not affect the validity of any lawful action done or
performed by the attorneys-in-fact or any of them, pursuant
thereto, prior to the actual receipt of notice by the attorneys-
in-fact.
        IN WITNESS WHEREOF, the undersigned has executed this
Power of Attorney this 9th day of March, 2006.

                                               /s/
                                             Jeffrey E. Gundlach
G:\CSFINC\SEC16\POA\Gundlach-J 03-06.doc

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