- Curragh Camp
- Curragh View
- Callan
- Cappagh
- Cappahayden
- Cappanagh
- Carran
- Carrickcloney
- Carrickmorne
- Carriganurra
- Carrigeen
- Carrigeen
- Carstown Cross Roads
- Castlebanny
- Castlecomer
- Castlecosker
- Castlekelly Cross Roads
- Castlemarket Bridge
- Castletown
- Castlewarren
- Catstown
- Cellarstown
- Clarabricken
- Clashduff
- Clasheen Bridge
- Clashwilliam
- Clintstown
- Clogga
- Clogghill
- Clogh