The Breda Ba.39 was an Italian fighter aircraft developed in the late 1930s. Designed by the Breda company, it was intended to serve as a lightweight interceptor. The aircraft featured a low-wing monoplane design and was powered by a single engine, which allowed for good maneuverability and speed. Although the Breda Ba.39 showed promise, it faced competition from other aircraft, such as the Fiat G.50 and Macchi C.202. Ultimately, it did not enter mass production, and only a few prototypes were built, limiting its operational use during World War II.