The Mitsubishi Ki-18 was an unsuccessful and unsolicited attempt by Mitsubishi to meet a 1934 requirement issued by the Japanese Army for a modern single-seat monoplane fighter suitable to the needs of the Imperial Japanese Army Air Force. During this competition Nakajima entered the Nakajima Ki-11 (which was somewhat similar to the Boeing P-26 Peashooter) and Kawasaki entered the more maneuverable Kawasaki Ki-10 biplane.
Made by Mitsubishi.