Form 8-K

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): April 14, 2005

FRONTIER OIL CORPORATION

(Exact name of registrant as specified in its charter)

Wyoming	1-7627	74-1895085
(State or other jurisdiction of incorporation or organization)	(Commission File Number)	(I.R.S. Employer Identification No.)

10000 Memorial Drive, Suite 600 Houston, Texas		77024-3411
(Address of principal executive offices)		(Zip Code)


Registrant’s telephone number, including area code: (713) 688-9600

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):

o Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

o Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

o Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.14d-2(b))

o Pre-commencement communications 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.

Directors’ Compensation Summary Sheet

On April 14, 2005, Frontier Oil Corporation’s Board of Directors approved a new compensation package for non-employee directors. The Directors’ Compensation summary sheet is filed as Exhibit 10.1 to this Report on Form 8-K and is incorporated herein by reference.

Item 9.01.

Financial Statements and Exhibits.

Exhibit Number	Description
10.1	Directors’ Compensation summary sheet

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.

	FRONTIER OIL CORPORATION


	By: /s/ Julie H. Edwards
	Julie H. Edwards
	Executive Vice President - Finance and Administration, Chief Financial Officer

Date: April 20, 2005