Fort Foote was an American Civil War-era wood and earthwork fort that was part of the wartime defenses of Washington, D.C., which helped defend the Potomac River approach to the city. It operated from 1863 to 1878, when the post was abandoned, and was used briefly during the First and Second World Wars. The remnants of the fort are located in Fort Foote Park, which is maintained by the U.S. National Park Service as part of the National Capital Parks-East system. The area's mailing address is Fort Washington, Maryland.