Nonant-le-Pin () is a former commune in the Orne department in north-western France. On 1 January 2025, it was merged into the new commune of Merlerault-le-Pin.
The commune is made up of the following collection of villages and hamlets, La Butte,La Reboursière, La Chauvinière, Les Terres Noires,Les Mandrettes and Nonant-le-Pin.
The former Commune is within the Natura 2000 protected area of Bocages et vergers du sud Pays d'Auge.
The former commune is part of a 20,593 hectare, Natura 2000 conservation area, called the Haute vallée de l'Orne et affluents.
Nonant-le-Pin has 2 rivers that run through it, the Dieuge and the Ure.