The Morane-Saulnier M.S.325 was a specialized aviation project developed by Aéroplanes Morane-Saulnier in response to a French single-seat fighter specification issued in 1930. The aircraft was one of two distinct designs submitted by the company to meet these military requirements. While the M.S.325 was intended for combat, it remained an experimental prototype and never progressed to series production or active military service.
Morane-Saulnier, the manufacturer, was established in October 1911 by Raymond Saulnier and brothers Léon and Robert Morane. The company built a reputation for producing trainers and fighters throughout the First World War and the interwar years. Although Raymond Saulnier served as a long-term chief designer for the firm, there is no specific record naming him or another individual as the primary designer of the M.S.325. The aircraft's configuration followed the trends of early 1930s French fighter concepts, specifically the C1-type specifications, which typically featured a parasol-wing or high-wing monoplane layout. A profile illustration of the aircraft appeared in the February 1933 issue of the journal L’Aérophile, indicating the prototype had reached an advanced stage of development or completion by that time.
Technical data regarding the M.S.325 is extremely sparse. There are no documented records concerning its engine model, power output, or manufacturer, nor are there published figures for its maximum speed, range, or dimensions. The aircraft was designed strictly as a single-seat fighter, meaning the crew consisted of one pilot with no passenger capacity. Because it never entered production, the M.S.325 saw no operational service with the Armée de l’Air or any other military or civil operator.
The legacy of the M.S.325 is primarily found in its role as an experimental stepping-stone. It represented the transitional design phase that eventually led Morane-Saulnier toward more advanced aircraft, such as the M.S.406 lineage. Today, no surviving airframes are known to exist in museums or private collections, and the aircraft is remembered as a reflection of the highly competitive nature of French fighter development in the early 1930s.