The best-of-five match will be played at the H.G. FitzGerald Center, site of the ATP Legg Mason Classic, on July 19-20.
"It is a great feeling to bring this international event to an outstanding public park tennis facility in our nation's capital," said United States captain Billie Jean King. "Over the years, many great American tennis players have come up through programs held in public parks, and the choice of this venue for Fed Cup is a tribute to those players and to the exceptional work done by the National Parks Service and the Washington Tennis and Education Foundation."
"We are delighted that the USTA has chosen Washington, D.C. for this prestigious international event," said D.C. Mayor Anthony A. Williams. "It is another example of how Washington, D.C., has become a premier sports destination for world class events. The Fed Cup represents the diversity and international popularity of the sport, and we look forward to hosting the U.S. Fed Cup team, our visiting guests from Italy, and all those who plan to attend the event."
King and Italian captain Corrado Barrazzutti will name their respective players by July 9.
The United States has won a record 17 Fed Cup titles since the inception of the competition in 1963.
Eight countries remain in contention for the 2003 Fed Cup title. The winner of this match will advance to the semifinals in November.
The U.S. beat the Czech Republic, 5-0, in the first round, while Italy advanced with a 3-2 victory over Sweden.
The United States is 8-0 all-time against Italy in Fed Cup play, including a 4-1 victory in the 1999 semifinals in the most recent meeting.