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

DATE OF REPORT (DATE OF EARLIEST EVENT REPORTED): MARCH 5, 2008

UNIONBANCAL CORPORATION
(EXACT NAME OF REGISTRANT AS SPECIFIED IN ITS CHARTER) 

 Delaware 001-15081 94-1234979
________________________ ________________________ ____________________
(State of Incorporation) (Commission File Number) (IRS Employer
tion No.)

400 California Street
San Francisco, CA 94104-1302
(Address of principal executive offices) (Zip Code)

Tel. (415) 765-2969
Registrant's telephone number, including area code

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General Instruction A.2. below):

[ ] Written communications pursuant to Rule 425 under the Securities Act


(17 CFR 230.425)

[ ] Soliciting material pursuant to Rule 14a-12 under the Exchange Act


(17 CFR 240.14a-12)

[ ] Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

[ ] Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

ITEM 5.02 DEPARTURE OF DIRECTORS OR CERTAIN OFFICERS; ELECTION OF DIRECTORS; APPOINTMENT OF CERTAIN OFFICERS; COMPENSATORY ARRANGEMENTS OF CERTAIN OFFICERS.

On March 5, 2008, Masashi Oka resigned as a Director of UnionBanCal Corporation effective April 1, 2008. Mr. Oka will be returning to The Bank of Tokyo-Mitsubishi UFJ, Ltd. for another assignment.

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SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized. 

Dated: March 5, 2008


 UNIONBANCAL CORPORATION


 By: /s/ JOHN H. MCGUCKIN, JR.
 ________________________________
 John H. McGuckin, Jr.
 Senior Executive Vice President,
 General Counsel & Secretary
 (Duly Authorized Officer)

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