The Morane-Saulnier I, also known as the Morane-Saulnier Type I was a French fighter of the 1910s. Essentially a modified Morane-Saulnier N, the Royal Flying Corps possessed a number of them in World War I.
Largely on the advice of Lord Trenchard, the Royal Flying Corps placed an order in 1916 for a more powerful version of the popular Morane-Saulnier N. Morane-Saulnier responded by fitting a 110 hp Le Rhône engine to a Type N, creating what they called the Type I. An order was placed initially for one aircraft, expanding to thirteen by March 1916.
However, only four aircraft were ever delivered to the RFC by July 1916, the aircraft having first flown in March of that year under RFC trials. No further production took place because the Morane-Saulnier V afforded more favourable characteristics. However, these Type Is were delivered to the front as combat aircraft and used as late as October 1916.