Aéroplanes Morane-Saulnier was a French aircraft manufacturing company formed in October 1911 by Raymond Saulnier and the Morane brothers, Léon and Robert.

One early pilot noted that if one left the aircraft to its own devices it would end up going upside down in the opposite direction.

During the late 1920s and early 1930s, it produced a number of parasol wing fighters including the M.S.230 and M.S.315, but all were of limited performance and were relegated to training duties.

Morane-Saulnier had much more success with its dramatically modernized M.S.406, which was the French Air Force's most numerous fighter at the start of the war.

Morane-Saulnier also produced a number of trainer and civilian aircraft models, the best known of which was the successful "Rallye" series of four-seat STOL semi-aerobatic tourers (see picture above).

[3] The company and Saulnier himself had a significant role in the development of the concept of synchronising machine gun fire through an aircraft's propeller.