Montbéliard-Courcelles Airfield (ICAO: LFSM) is a small general aviation aerodrome located in Courcelles-lès-Montbéliard, in the Doubs department of the Bourgogne-Franche-Comté region of eastern France. It serves private pilots, flight training, and light aircraft operations in the greater Montbéliard and Belfort area. The airfield does not handle scheduled commercial passenger services and has no IATA code assigned. It is primarily used by local aero clubs and private aviation, making it a modest but important facility for general aviation in the region. Montbéliard is an industrial city historically associated with the Peugeot automobile manufacturing heritage, and the airfield supports business aviation and recreational flying in this part of the Franco-Swiss border area.