Mitsui Sumitomo Insurance 15-15D Suspension of duty to report

UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

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 SECTION 13 AND 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934.

Commission File Number 333-148157

Mitsui Sumitomo Insurance Company, Limited(Exact name of registrant as specified in its charter)

27-2, Shinkawa 2-chome, Chuo-ku, Tokyo 104-8252, Japan
(81) 3-3297-1111

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

Common Stock

(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)(i)	o	Rule 12h-3(b)(1)(i)	o
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	x

Approximate number of holders of record as of the certification or notice date: 1

Pursuant to the requirements of the Securities Exchange Act of 1934, Mitsui Sumitomo Insurance Company, Limited has duly caused this certification/notice to be signed on its behalf by the undersigned duly authorized person.

Date:	April 3, 2008	By:	/s/ Yasuaki Tamai
			Yasuaki Tamai General Manager, Shareholder Relations & Legal Dept.