Line C
- Avenue C Line (Manhattan)
- Bordeaux Tramway line C
- C (AC Transit)
- C (Los Angeles Railway)
- C (New York City Subway service)
- C (S-train)
- C Line (Los Angeles Metro)
- C Line (RTD)
- C Train (disambiguation)
- Line C (Buenos Aires Underground)
- Line C (Prague Metro)
- Line C (Rome Metro)
- Lyon Metro Line C
- Metro C Line (Minnesota)
- RER C
- RapidRide C Line