The Supermarine Seafire is a naval version of the Supermarine Spitfire adapted for operation from aircraft carriers. It was analogous in concept to the Hawker Sea Hurricane, a navalised version of the Spitfire's stablemate, the Hawker Hurricane. The name Seafire was derived from the abbreviation of the longer name Sea Spitfire.

The Supermarine Spitfire is a British single-seat fighter aircraft used by the Royal Air Force and other Allied countries before, during, and after World War II. Many variants of the Spitfire were built, from the Mk 1 to the Rolls-Royce Griffon-engined Mk 24 using several wing configurations and guns. It was the only British fighter produced continuously throughout the war. The Spitfire remains popular among enthusiasts; around 70 remain airworthy, and many more are static exhibits in aviation museums throughout the world.