-----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,
 NtWMOi1IyP1nwcsyLOhZzZ0/77ZuzUNqjAp3zsBbIydkT9Y009qz2DPWFhg3lG2w
 NIFRrv5BFzEH3UDDLPzPMw==

<SEC-DOCUMENT>0001246153-03-000002.txt : 20031104
<SEC-HEADER>0001246153-03-000002.hdr.sgml : 20031104
<ACCEPTANCE-DATETIME>20031104192701
ACCESSION NUMBER:		0001246153-03-000002
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20031104
FILED AS OF DATE:		20031104

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			SCHMAIER R DAVID
		CENTRAL INDEX KEY:			0001238464

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-20725
		FILM NUMBER:		03977617

	MAIL ADDRESS:	
		STREET 1:		C/O SIEBEL SYSTEMS INC
		STREET 2:		2207 BRIDGEPOINTE PARKWAY
		CITY:			SAN MATEO
		STATE:			CA
		ZIP:			94404

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			SIEBEL SYSTEMS INC
		CENTRAL INDEX KEY:			0001006835
		STANDARD INDUSTRIAL CLASSIFICATION:	SERVICES-PREPACKAGED SOFTWARE [7372]
		IRS NUMBER:				943187233
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		2207 BRIDGEPOINTE PARKWAY
		CITY:			SAN MATEO
		STATE:			CA
		ZIP:			94404
		BUSINESS PHONE:		6504775000

	MAIL ADDRESS:	
		STREET 1:		2207 BRIDGEPOINTE PARKWAY
		CITY:			SAN MATEO
		STATE:			CA
		ZIP:			94404
</SEC-HEADER>
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<TYPE>4
<SEQUENCE>1
<FILENAME>c0001238464d20031104f4f.xml
<DESCRIPTION>PRIMARY DOCUMENT
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ivativeTransaction></derivativeTable><footnotes><footnote id="F1">Officer acquired 1,307 shares of Common Stock on June 30, 2003 at $6.29 per share through the company's Employee Stock Purchase Plan.</footnote><footnote id="F2">The option becomes exercisable at a rate of 3.57% each quarter after January 10, 1997.</footnote></footnotes><ownerSignature><signatureName>R. D Schmaier</signatureName><signatureDate>2003-11-04</signatureDate></ownerSignature></ownershipDocument>

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</SEC-DOCUMENT>
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