canton of Saint-Quentin-Sud (canton de Saint-Quentin-Sud)
- canton of France (until March 2015)
- Country:
- Capital: Saint-Quentin
- Coordinates: 49° 51' 0" N, 3° 17' 0" E
- GPS tracks (wikiloc): [Link]
- Wikidata storage: Wikidata: Q955383
- Freebase ID: [/m/04124t4]
- INSEE canton code: [0240]