The Messerschmitt M 24, otherwise known as the BFW M.24 was an airliner developed in Germany in the late 1920s as a further development in the series of designs produced by Messerschmitt based on the M 18. Like the M 18 and its follow-on, the M 20, it was a high-wing cantilever monoplane with a fully enclosed cabin and fixed tailwheel undercarriage.