Ward Circle is a traffic circle at the intersection of Nebraska and Massachusetts Avenues in Northwest, Washington, D.C. The circle, totaling 30,243 sq ft (2,809.7 m2), is owned and administered by the National Park Service through its Rock Creek Park unit. On three sides is the campus of American University, while the fourth is occupied by the Nebraska Avenue Complex, a U.S. government facility.

Massachusetts Avenue is a major diagonal transverse road in Washington, D.C., and the Massachusetts Avenue Historic District is a historic district that includes part of it.