Ailette (river)
 The Ailette is a 59.5 km (37.0 mi) long river in the Aisne département eastern France. Its source is at Sainte-Croix. It flows generally west-northwest. It is a left tributary of the Oise into which it flows between Manicamp and Quierzy 30 km (19 mi) northeast of Compiègne.On most of its course it shares its valley with the Canal de l'Oise à l'Aisne.