Saint-Pierre-des-Nids () is a commune in the Mayenne department in north-western France.
The Commune along with another 11 communes shares part of a 5,255 hectare, Natura 2000 conservation area, called the Vallée du Sarthon et affluents.
In addition the Commune along with another 4 communes shares part of a 1,190 hectare, Natura 2000 conservation area, called the Alpes Mancelles.
The commune is made up of the following collection of villages and hamlets, Annette, La Cirardière, Ville Perdue, La Sourdière, La Couaslonnière, La Nouillerie, L'ÃÂtang du Tour, Saint-Pierre-des-Nids, Bochard, La Moussardière, La Blanchinière, La Baderie, Champrousier and La Payardière.
The commune is in the Normandie-Maine Regional Natural Park.
The Commune has a total of 2 buildings and areas listed as a Monument historique: