The Morane-Saulnier AR was a trainer aircraft produced in France during and after the First World War. Developed from the Morane-Saulnier LA reconnaissance aircraft, it was a wire-braced parasol-wing monoplane of conventional design with two open cockpits in tandem and cross-axle-style tailskid undercarriage. Construction was mostly of fabric-covered wood, but the forward fuselage was skinned in metal.
Large-scale production commenced after the Armistice, with the type now designated MS.35, in a number of subtypes differentiated principally in the engine used. Although Morane-Saulnier hoped to sell the type on the civil market as a touring machine, most of the 400 examples built saw service with the French Army, but others were used by the Navy and still others exported to foreign air arms. The MS.35s remained in service in France until 1929, after which time some were sold to the nation's flying clubs.