The Radioplane RP-77 was a target drone developed by the Radioplane Company in the United States during the 1950s. It was designed to serve as a radar target for anti-aircraft artillery training. The RP-77 was a high-wing monoplane with a pusher propeller, powered by a McCulloch piston engine. It was launched from a zero-length launcher using a solid rocket booster, and recovered by parachute.