- Capparoe
- Cappateemore
- Carhameere
- Carnaun
- Carran
- Carranahingan Bridge
- Carricknacleara
- Carrigaholt
- Carrowauff
- Carrowblough Beg
- Carrowblough More
- Carrowfree
- Carrowgar
- Carrowmore
- Carrowmore North
- Carrowmore South
- Carrownaweelaun
- Carrowncalla
- Carrowncalla North
- Carrowncalla South
- Carrowniska
- Carton
- Castletown
- Church Island
- Churchtown
- Clarecastle
- Clareen Bridge
- Clarefield
- Clareville
- Claureen Bridge