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: September 14, 2005
(Date of earliest event reported)

BANCWEST CORPORATION

(Exact name of registrant as specified in its charter)

Delaware
(State or other jurisdiction
of incorporation) 0-7949
(Commission File Number) 99-0156159
(IRS Employer
Identification No.)

999 Bishop Street, Honolulu, Hawaii
(Address of principal executive offices) 96813
(Zip Code)

Registrant’s telephone number, including area code: (808) 525-7000

Not Applicable
(Former name or former address, if changed since last report)

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 communication pursuant to rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

£    Pre-commencement communication pursuant to rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Item 1.01 Entry into a Material Definitive Agreement.

On September 14, 2005, the executive committee of registrant’s board of directors adopted an amendment to the BancWest Corporation Supplemental Executive Retirement Plan. The amendment, which is effective as of January 1, 2005, is furnished as Exhibit 10.1 to this Current Report on Form 8-K and incorporated herein by reference.

Item 9.01 Financial Statements and Exhibits

(c)     Exhibits.

          The following exhibits are furnished herewith:

Exhibit No.	Description of Exhibit
10.1	Amendment No. 3 to BancWest Corporation Supplemental Executive Retirement Plan

SIGNATURE

          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: September 29, 2005	BANCWEST CORPORATION
	By:	/s/ DOUGLAS C. GRIGSBY
		Douglas C. Grigsby
		Executive Vice President, Chief Financial Officer and Treasurer

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EXHIBIT INDEX

Exhibit No.	Exhibit
10.1	Amendment No. 3 to BancWest Corporation Supplemental Executive Retirement Plan

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