- Cheddar
- Cheeseborough
- Cheminis
- Chemong Heights
- Chemong Park
- Chenaux
- Cherry Grove
- Cherry Island
- Chesley
- Chesterfield
- Chetwynd
- Chikopi
- Childs Mines
- Chippawa
- Chippewa
- Chisholm's Mills
- Chiswick
- Christian Valley
- Christie Lake
- Christina
- Churchville
- Clandeboye
- Clare
- Clarendon Station
- Clarina
- Clarington
- Clarke
- Clarke's Corners
- Clarks Church
- Clay Bank