The McDonnell F2H Banshee is a single-seat carrier-based jet fighter aircraft designed and produced by the American aircraft manufacturer McDonnell Aircraft. It was an early jet fighter operated by United States Navy and United States Marine Corps, as well as being the only jet-powered fighter to ever be deployed by the Royal Canadian Navy. The aircraft's name is derived from the banshee of Irish mythology.

The McDonnell Aircraft Corporation was an American aerospace manufacturer based in St. Louis, Missouri. The company was founded on July 6, 1939, by James Smith McDonnell, and was best known for its military fighters, including the F-4 Phantom II, and crewed spacecraft including the Mercury capsule and Gemini capsule. McDonnell Aircraft later merged with the Douglas Aircraft Company to form McDonnell Douglas in 1967.