The Gloster Gorcock was a single-engined single-seat biplane fighter aircraft produced to a United Kingdom Air Ministry contract completed in 1927.

They were intended to develop metal-framed aircraft, with the first two to have steel fuselages and wooden wings (all fabric covered) and the third to have an all-steel airframe.

They were to be powered by a Napier Lion engine which had been used in the racing Gloster III and was a water-cooled motor with three banks of four cylinders in an upright broad arrow arrangement.

The inline engine allowed a smoother, longer and more pointed nose and increased the length by about 6 ft 5 in (1.95 m); the span was slightly less than the Gamecock's.

Despite their research role, the Gorcocks flew armed with two Vickers machine guns in the nose.