The Mitsubishi Ki-30 was a Japanese light bomber of World War II. It was a single-engine, mid-wing, cantilever monoplane of stressed-skin construction with a fixed tailwheel undercarriage and a long transparent cockpit canopy. The type had significance in being the first Japanese aircraft to be powered by a modern two-row radial engine. During the war, it was known by the Allies by the name Ann.
The Ki-30s were first used in combat in Second Sino-Japanese War from spring 1938. It proved to be reliable in rough field operations, and highly effective while operating with fighter escort. This success continued in the early stages of the Pacific War, and the Ki-30s participated extensively in operations in the Philippines. However, once unescorted Ki-30s met Allied fighters, losses mounted rapidly and the type was soon withdrawn to second-line duties. By the end of 1942, most Ki-30s were relegated to a training role. Many aircraft were expended in kamikaze attacks towards the end of the war.
