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 20, 2004

WASHINGTON REAL ESTATE INVESTMENT TRUST

(Exact name of registrant as specified in its charter)

Registrant’s telephone number, including area code (301) 984-9400

Item 7. Financial Statements and Exhibits

(c) Exhibits

Exhibit 99.1 Press release issued April 20, 2004 regarding earnings for first quarter 2004

Exhibit 99.2 Certain supplemental information not included in the press release

Item 9. Regulation FD Disclosure

and

Item 12. Results of Operations and Financial Condition

A press release issued by the Registrant on April 20, 2004, regarding earnings for the first quarter 2004, is attached as Exhibit 99.1. Also, certain supplemental information not included in the press release is attached as Exhibit 99.2. This information is being furnished pursuant to Item 9 and Item 12 of Form 8-K. This information is not deemed to be “filed” for the purposes of Section 18 of the Securities Exchange Act of 1934 and is not incorporated by reference into any Securities Act registration statements.

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.

April 20, 2004

        (Date)

Exhibit Index