canton of Longny-au-Perche (canton de Longny-au-Perche)
- canton of France (until March 2015)
- Country:
- Capital: Longny-au-Perche
- Coordinates: 48° 32' 3" N, 0° 47' 42" E
- GPS tracks (wikiloc): [Link]
- Wikidata storage: Wikidata: Q1542357
- INSEE canton code: [6119]