The Gorgon III – given the military designations KA3N, KU3N, CTV-N-6 and RTV-N-4 – was a rocket-powered air-to-air missile developed by the United States Navy near the end of World War II.

With the end of the war, the program was changed to that of a research vehicle for missile control systems; both single and twin-rocket-powered versions were built and tested.

[1] The Gorgon III was intended as an air-to-air missile for use by patrol aircraft; it would have a conventional aircraft-type design, with a high-mounted wing and twin tail fins.

[1] Due to a lack of suitable turbojet engines for missile usage,[4] the Gorgon IIIB was cancelled before any vehicles had been built.

[5] Redesignated KU3N-2 with the end of the war,[1] six were utilized by the Navy in trials of missile stability, control, and performance;[4] the other six were used by the National Advisory Committee for Aeronautics (NACA) for research into flight conditions at high subsonic speeds, launched from the Pilotless Aircraft Research Station at Wallops Island, Virginia, using a purpose-built 400-foot (120 m) launch ramp.