Fort Necessity National Battlefield is a National Battlefield Site in Fayette County, Pennsylvania, United States, which preserves elements of the Battle of Fort Necessity. The battle, which took place on July 3, 1754, was an early battle of the French and Indian War, and resulted in the surrender of the British, under Colonel George Washington, to the French and Indians, under Louis Coulon de Villiers.
During the Great Depression of the 20th century, attempts to preserve the location of Fort Necessity were undertaken. On March 4, 1931, Congress declared the location a National Battlefield Site under management of the War Department. Transferred to the National Park Service in 1933, the park was redesignated a National Battlefield on August 10, 1961. As with all historic sites administered by the National Park Service, the battlefield was listed on the National Register of Historic Places on October 15, 1966.