April 20, 2005

(Date of Report - Date of earliest event reported)

KERR-McGEE CORPORATION

(Exact name of registrant as specified in its charter)

Delaware

1-16619

73-1612389

(State of Incorporation)

(Commission File Number)

(IRS Employer Identification No.)

Kerr-McGee Center

Oklahoma City, Oklahoma

73125

(Address of principal executive offices)

(Zip Code)

(405)   270-1313

(Registrant's telephone number)

Item 7.01

On April 20, 2005, Kerr-McGee Corporation issued a press release announcing that it will hold a conference call on Wednesday, April 27, 2005, at 11:00 a.m. (EDT) to discuss its first-quarter 2005 financial and operating results, and expectations for the future.  Interested parties may listen to the call via Kerr-McGee’s website at www.kerr-mcgee.com or by calling 888-482-0024, within the United States or 617-801-9702, outside the United States.  The password for both dial-in numbers will be “Kerr-McGee”.  The press release is attached hereto as an exhibit and is incorporated by reference herein.

At 11:00 a.m. (EDT) on April 27, 2005, Kerr-McGee will make available on its website at www.kerr-mcgee.com a table providing Projected Daily Average Production Volumes and a table containing Oil and Gas Derivatives as of April 2005.  To access the tables, select “Investor Relations” and “GAAP Reconciliation & Historical Information and Guidance”.

Item 9.01

Financial Statements and Exhibits

(c) Exhibits

99.1 Press Release dated April 20, 2005

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.