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<p align="center"><font size="3"><strong>UNITED STATES</br>
SECURITIES AND EXCHANGE COMMISSION</br>
Washington, D.C. 20549</strong></font></p>

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<HR WIDTH="25%">
<p align="center"><font size="3"><strong>FORM 8-K</strong></font></p>
<HR WIDTH="25%">
<br>

<p align="center"><font size="3"><strong>
CURRENT REPORT
</strong></font></p>

<p align="center"><font size="3"><strong>
PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES
     EXCHANGE ACT OF 1934
</strong></font></p>
<p align="center"><font size="3"><strong>
<U>April 23, 2003</U>
</strong></font></p>

<p align="center"><font size="2">
             Date of Report (Date of earliest event reported)
</font></p>

<p align="center"><font size="5" color="#0000FF"><strong>
                 <u> SIEBEL SYSTEMS, INC.</u>
</strong></font></br>
<font size="2">
             (Exact name of Registrant as specified in its charter)
</font></p>

<P>&nbsp;
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<font size="3"><strong>
<CENTER><u>Delaware</u></CENTER>
</font></strong>
</TD>
<TD>
<font size="3"><strong>
<CENTER><u>0-20725</u></CENTER>
</font></strong>
</TD>
<TD>
<font size="3"><strong>
<CENTER><u>94-3187233</u></CENTER>
</font></strong>
</TD>
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<TD>
<font size="2">
<CENTER>&nbsp; (State or other jurisdiction of incorporation or organization)&nbsp;</CENTER>
</font>
</TD>
<TD>
<font size="2">
<CENTER>(Commission File Number)</CENTER>
</font>
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<font size="2">
<CENTER>(IRS Employer Identification Number)</CENTER>
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<p align="center"><font size="3"><strong>
                            2207 Bridgepointe Parkway<br>
                            <u>San Mateo, CA &nbsp; 94404
</strong></font></u><br>

<font size="2">
                   (Address of principal executive offices, including zip code)
</font></p>

<p align="center"><font size="3"><strong><u>
                                 (650) 477-5000
</strong></font></u><br>

<font size="2">
             (Registrant's telephone number, including area code)
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<B><P ALIGN="JUSTIFY">Item 9.&#9;  Regulation FD Disclosure.</P></B>

<P ALIGN="JUSTIFY">This Form 8-K is being furnished to report information pursuant to
Item 12 -- Disclosure of Results of Operations and Financial Condition.  See Item 12 below.</P>

<B><P ALIGN="JUSTIFY">Item 12.&#9; Disclosure of Results of Operations and Financial Condition.</P></B>

<P ALIGN="JUSTIFY">On April 23, 2003, Siebel Systems, Inc. issued a press release announcing
results for the quarter ended March 31, 2003.  A copy of the press release is attached as Exhibit 99.1
to this Current Report and is incorporated herein by reference.</P>


<B><P ALIGN="JUSTIFY">Item 7.&#9;  Financial Statements and Exhibits.</P></B>

<P ALIGN="JUSTIFY">(c)&#9;  Exhibits.</P>

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                                                                                                                                                                                                                                           99.1
</TD>
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<FONT SIZE=2><P>
Press Release, dated as of April 23, 2003, entitled "Siebel Systems Reports
Revenue and Earnings for the Quarter Ended March 31, 2003."
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</P><B><P ALIGN="CENTER">SIGNATURE</P>
</B><P ALIGN="JUSTIFY"><Font size="2">Pursuant to the requirements of the Securities Exchange Act of 1934, as amended,
the Registrant has duly caused this report to be signed on its behalf by the undersigned,
hereunto duly authorized.</P>

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    <TD>&nbsp;</TD>
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<B>                                   SIEBEL SYSTEMS, INC.</B>
</TD></TR></TABLE>

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    <TD>&nbsp;</TD>
    <TD align=left><FONT SIZE=2>
<I>(Registrant)</I>
</TD></TR></TABLE>


<FONT SIZE=2>
<p>Dated: April 23, 2003


<P>
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    <TD>&nbsp;</TD>
    <TD><FONT SIZE=2>By:&nbsp;</TD>
                                                                                                            <TD align=left><FONT SIZE=2>
/s/ Kenneth A. Goldman
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    </TD></TR>
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    <TD>&nbsp;</TD>
    <TD align=left><FONT SIZE=2>
Kenneth A. Goldman
</TD></TR>
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    <TD>&nbsp;</TD>
    <TD align=left><FONT SIZE=2><I>
                                    Senior Vice President,<br>
                                    Finance and Administration<br>
                                    and Chief Financial Officer
</I></TD></TR></TABLE></P>

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<B><P ALIGN="Center">INDEX TO EXHIBITS</P></B>

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                                                                                                                                                                                                                                           99.1
</TD>
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<FONT SIZE=2><P>
Press Release, dated as of April 23, 2003, entitled "Siebel Systems Reports
Revenue and Earnings for the Quarter Ended March 31, 2003."
</TD>
</TR>
</TABLE>

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4.23 8K doc
UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
FORM 8-K
CURRENT REPORT
PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES
     EXCHANGE ACT OF 1934
April 23, 2003
Date of Report (Date of earliest event reported)
SIEBEL SYSTEMS, INC.
(Exact name of Registrant as specified in its charter)
Delaware
0-20725
94-3187233
(State or other jurisdiction of incorporation or organization)
(Commission File Number)
(IRS Employer Identification Number)
2207 Bridgepointe Parkway
San Mateo, CA   94404
(Address of principal executive offices, including zip code)
(650) 477-5000
(Registrant's telephone number, including area code)
Item 9.	  Regulation FD Disclosure.
This Form 8-K is being furnished to report information pursuant to
Item 12 -- Disclosure of Results of Operations and Financial Condition.  See Item 12 below.
Item 12.	 Disclosure of Results of Operations and Financial Condition.
On April 23, 2003, Siebel Systems, Inc. issued a press release announcing
results for the quarter ended March 31, 2003.  A copy of the press release is attached as Exhibit 99.1
to this Current Report and is incorporated herein by reference.
Item 7.	  Financial Statements and Exhibits.
(c)	  Exhibits.
99.1
Press Release, dated as of April 23, 2003, entitled "Siebel Systems Reports
Revenue and Earnings for the Quarter Ended March 31, 2003."
SIGNATURE
Pursuant to the requirements of the Securities Exchange Act of 1934, as amended,
the Registrant has duly caused this report to be signed on its behalf by the undersigned,
hereunto duly authorized.
SIEBEL SYSTEMS, INC.
(Registrant)
Dated: April 23, 2003
By:
/s/ Kenneth A. Goldman
Kenneth A. Goldman
Senior Vice President,
Finance and Administration
and Chief Financial Officer
INDEX TO EXHIBITS
99.1
Press Release, dated as of April 23, 2003, entitled "Siebel Systems Reports
Revenue and Earnings for the Quarter Ended March 31, 2003."