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Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
Originator-Key-Asymmetric:
 MFgwCgYEVQgBAQICAf8DSgAwRwJAW2sNKK9AVtBzYZmr6aGjlWyK3XmZv3dTINen
 TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB
MIC-Info: RSA-MD5,RSA,
 HK/encOuG1xBM1jsg3ctcnyBtJyjdZmV/8OsWQebdTonYNCWsN/inTxgAYmGqSer
 mWEL8nT4eIYkkmD/WcCmog==

<SEC-DOCUMENT>0000914121-06-001528.txt : 20060511
<SEC-HEADER>0000914121-06-001528.hdr.sgml : 20060511
<ACCEPTANCE-DATETIME>20060511085708
ACCESSION NUMBER:		0000914121-06-001528
CONFORMED SUBMISSION TYPE:	3
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20060116
FILED AS OF DATE:		20060511
DATE AS OF CHANGE:		20060511

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			KOSKOVOLIS LOUIS
		CENTRAL INDEX KEY:			0001350004

	FILING VALUES:
		FORM TYPE:		3
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-13703
		FILM NUMBER:		06828281

	BUSINESS ADDRESS:	
		BUSINESS PHONE:		405-475-2500

	MAIL ADDRESS:	
		STREET 1:		C/O SIX FLAGS INC
		STREET 2:		11501 NORTHEAST EXPRESSWAY
		CITY:			OKLAHOMA
		STATE:			OK
		ZIP:			73131

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			SIX FLAGS INC
		CENTRAL INDEX KEY:			0000701374
		STANDARD INDUSTRIAL CLASSIFICATION:	SERVICES-MISCELLANEOUS AMUSEMENT & RECREATION [7990]
		IRS NUMBER:				736137714
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		11501 NE EXPWY
		CITY:			OKLAHOMA CITY
		STATE:			OK
		ZIP:			73131
		BUSINESS PHONE:		4054752500

	MAIL ADDRESS:	
		STREET 1:		122 EAST 42ND STREET 49TH STREET
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10168

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	TIERCO GROUP INC/DE/
		DATE OF NAME CHANGE:	19920703
</SEC-HEADER>
<DOCUMENT>
<TYPE>3
<SEQUENCE>1
<FILENAME>p723008-3_ex.xml
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0202</schemaVersion>

    <documentType>3</documentType>

    <periodOfReport>2006-01-16</periodOfReport>

    <noSecuritiesOwned>1</noSecuritiesOwned>

    <issuer>
        <issuerCik>0000701374</issuerCik>
        <issuerName>SIX FLAGS INC</issuerName>
        <issuerTradingSymbol>PKS</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001350004</rptOwnerCik>
            <rptOwnerName>KOSKOVOLIS LOUIS</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O SIX FLAGS INC</rptOwnerStreet1>
            <rptOwnerStreet2>1540 BROADWAY</rptOwnerStreet2>
            <rptOwnerCity>NEW YORK</rptOwnerCity>
            <rptOwnerState>NY</rptOwnerState>
            <rptOwnerZipCode>10036</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>EVP, Corporate Alliances</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <ownerSignature>
        <signatureName>/s/ Louis Koskovolis</signatureName>
        <signatureDate>2006-05-10</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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