Escadrille Spa.81 was a French fighter squadron active in World War warfare during 1917 and 1918.

It was twice Cited in orders and entitled to the Fourragere of the Croix de Guerre.

From then until war's end, as part of a larger formation, Escadrille Spa.81 was frequently shifted into tactical situations on the Western Front in a "fire brigade" fashion.

This entitled the unit to display the Fourragere of the Croix de Guerre.

By the 11 November 1918 ceasefire, the squadron was credited with destroying 88 German aircraft.