District of Columbia City Hall, also known as Old City Hall and the District of Columbia Courthouse, is a historic building at Judiciary Square in downtown Washington, D.C. facing Indiana Avenue. Originally built for the offices of the government of the District of Columbia, the District's courthouse was subsequently used as a Federal courthouse, and was the scene of several notable criminal trials including those of three accused presidential assassins. The building was declared a National Historic Landmark in 1960. It now houses the District of Columbia Court of Appeals.

Judiciary Square is a neighborhood in the northwest quadrant of Washington, D.C., the vast majority of which is occupied by various federal and municipal courthouses and office buildings. Judiciary Square is located roughly between Pennsylvania Avenue to the south, H Street to the north, 6th Street to the west, and 3rd Street to the east. The center of the neighborhood is an actual plaza named Judiciary Square. The Square itself is bounded by 4th Street to the east, 5th Street to the west, D Street and Indiana Avenue to the south, and F Street to the north. The neighborhood is served by the Judiciary Square station on the Red Line of the Washington Metro, in addition to Washington Metropolitan Area Transit Authority bus stops.