UNITED STATES SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 15

Commission File Number: 0-9722

Intergraph Corporation

(Exact name of registrant as specified in its charter)

One Madison Industrial Park IW 2000, Huntsville, AL (256) 730-2000

(Address, including zip code, and telephone number, including area code, of registrant’s principal executive offices)

Common Stock, par value $0.10 per share

Common Stock Purchase Rights

(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 provisions(s) relied upon to terminate or suspend the duty to file reports:

Rule 12g-4(a)(1)(i)		þ		Rule 12h-3(b)(1)(i)		þ
Rule 12g-4(a)(1)(ii)		o		Rule 12h-3(b)(1)(ii)		o
Rule 12g-4(a)(2)(i)		o		Rule 12h-3(b)(2)(i)		o
Rule 12g-4(a)(2)(ii)		o		Rule 12h-3(b)(2)(ii)		o
				Rule 15d-6		o

     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, Intergraph Corporation has caused this certification/notice to be signed and filed on its behalf by the undersigned duly authorized person.

Date:  November 29, 2006		By:		/s/ Larry J. Laster
		Name:		Larry J. Laster
		Title:		Senior Vice President and Treasurer

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.