SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

Form 8-K

Current Report Pursuant to Section 13 or 15(d) of

The Securities Act of 1934

Date of Report (Date of earliest event reported): April 6, 2004

UNION BANKSHARES CORPORATION

(Exact name of registrant as specified in its charter)

212 North Main Street

P.O. Box 446

Bowling Green, Virginia 22427

(Address of principal executive offices, including zip code)

Registrant’s telephone number, including area code: (804) 633-5031

Item 5. Other Events and Regulation FD Disclosure.

The following information and exhibit is being furnished persuant to Regulation FD.

On April 6, 2004, Union Bankshares Corporation issued a press release announcing the declaration of a semiannual dividend payable May 3, 2004 to stockholders of record as of April 19, 2004. A copy of the company’s press release is attached as Exhibit 99.1 hereto and is hereby incorporated herein by reference.

Item 7. Financial Statements and Exhibits.

2

SIGNATURES

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

3