Canton of Castelnau-Rivière-Basse (canton de Castelnau-Rivière-Basse)
- canton of France (until March 2015)
- Country:
- Capital: Castelnau-Rivière-Basse
- Coordinates: 43° 34' 54" N, 0° 1' 40" E
- GPS tracks (wikiloc): [Link]
- Wikidata storage: Wikidata: Q595608