UNITED STATES SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, DC 20549

FORM 8-K

CURRENT REPORT

PURSUANT TO SECTION 13 OR 15(d) OF THE

SECURITIES EXCHANGE ACT OF 1934

April 15, 2004

Date of Report (Date of earliest event reported)

UNION PLANTERS CORPORATION

(Exact name of registrant as specified in charter)

UNION PLANTERS CORPORATION

6200 POPLAR AVE

MEMPHIS, TENNESSEE 38119

(Address of principal executive offices)

Registrant’s telephone number, including area code: (901) 580-6000

Not Applicable

(Former name of former address, if changed since last report)

Item 7. Financial Statements, Pro Forma Financial Statements and Exhibits.

C. Exhibit furnished pursuant to Item 12:

     99.1 Union Planters Corporation Press Release dated April 15, 2004

     99.2 Supplemental financial information (unaudited)

Item 12. Results of Operations and Financial Condition.

First quarter 2004 earnings release.

On April 15, 2004, Union Planters Corporation announced operating results for the three months ended March 31, 2004. A copy of the Company’s press release announcing the results is attached as Exhibit 99.1 and is incorporated by reference herein. Additionally, the Company provided supplemental financial information for analysts and other interested investors. This information is attached as Exhibit 99.2 and is incorporated by reference herein.

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.