- Cahersiveen
- Carrick-on-Suir
- Cashel
- Cabergarrann
- Cahenea
- Caher
- Caher
- Caher Island
- Caher Lower
- Caherbannagh
- Cahercannavan
- Caherconnell
- Caherfenick
- Caherlean
- Caherlough
- Caherloughlin
- Cahermacnaghten
- Cahermacun
- Cahermurphy
- Cahermurphy
- Caherogan
- Cahersherkin
- Callaghan’s Bridge
- Cammoge
- Canon Island
- Cappagh
- Cappagh Beg
- Cappalaheen
- Cappanavarnoge
- Cappantruhaun