- Cadmus
- Caintown
- Cairngorm
- Cairo
- Caistor Centre
- Caistorville
- Calabogie
- Calderwood
- Caledon
- Caledon
- Caledonia
- California
- California
- Caliper Lake
- Callander
- Calton
- Cambridge
- Camel Chute
- Camelot Beach
- Cameron
- Camp Island
- Camp Oconto
- Campania
- Campbells Corners
- Campbellton
- Campbelltown
- Candyville
- Canning
- Cannington
- Canonto