Ilog (ILOG) 15-12G Securities registration termination

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549	OMB APPROVAL
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FORM 15

CERTIFICATION AND NOTICE OF TERMINATION OF REGISTRATION UNDER SECTION

12(g) OF THE SECURITIES EXCHANGE ACT OF 1934 OR SUSPENSION OF DUTY TO FILE

REPORTS UNDER SECTIONS 13 AND 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934.

Commission File Number	000-29144
ILOG S.A.
(Exact name of registrant as specified in its charter)
9 rue de Verdun BP 85, 94253 Gentilly, France
(Address, including zip code, and telephone number, including area code, of registrant’s principal executive offices)
Ordinary Shares, Nominal Value €1.00 Per Ordinary Share (CUSIP: FR0004042364) and American Depositary Shares (Each Representing One Ordinary Share) (CUSIP: 452360100)
(Title of each class of securities covered by this Form)
None
(Titles of all other classes of securities for which a duty to file reports under section 13(a) or 15(d) remains)

Please place an X in the box(es) to designate the appropriate rule provision(s) relied upon to terminate or suspend the duty to file reports:

Rule 12g-4(a)(1)	x
Rule 12g-4(a)(2)	¨
Rule 12h-3(b)(l)(i)	x
Rule 12h-3(b)(1)(ii)	¨
Rule 15d-6	¨

Approximate number of holders of record as of the certification or notice date:  One         

Pursuant to the requirements of the Securities Exchange Act of 1934, ILOG S.A. has caused this certification/notice to be signed on its behalf by the undersigned duly authorized person.

Date:	December 29, 2008	By:	/s/ Jérôme Arnaud
		Name:	Jérôme Arnaud
		Title:	Chief Financial Officer

Instruction:  This form is required by Rules 12g-4, 12h-3 and 15d-6 of the General Rules and Regulations under the Securities Exchange Act of 1934.  The registrant shall file with the Commission three copies of Form 15, one of which shall be manually signed.  It may be signed by an officer of the registrant, by counsel or by any other duly authorized person.  The name and title of the person signing the form shall be typed or printed under the signature.

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