The Caproni Ca.133 was a three-engined transport/bomber aircraft used by the Italian Regia Aeronautica from the Second Italo-Abyssinian War until World War II. Originally developed as a civilian airliner and successor to the Ca.101, the Ca.133 prototype first flew in December 1934, and production began in 1935. The military versions of the aircraft were used as transports and light bombers and saw action on all fronts.