C
- (Kerry) Cloghaun
- (Kerry) Cloghaneleesh
- (Kerry) Cloghanebane
- (Kerry) Caherulla
- (Kerry) Cleanderry
- (Kerry) Clooneen
- (Clare) Cloghaunsavaun
- (Clare) Carrownaweelaun
- (Clare) Coosheen
- (Clare) Carrowmore North
- (Clare) Carrowmore
- (Clare) Carnaun
- (Clare) Carrowncalla North
- (Clare) Carrowncalla South
- (Clare) Cammoge
- (Clare) Clarefield
- (Clare) Carrowblough Beg
- (Clare) Carrowmore South
- (Clare) Carricknacleara
- (Kerry) Carhoonaknock
- (County Cork) Curryglass
- (County Tipperary) Curreeny
- (Kerry) Curranes
- (County Cork) Curraheen
- (County Cork) Curraglass
- (County Cork) Curraghgorm
- (County Cork) Curragh
- (Clare) Cullenagh
- (County Tipperary) Cullen
- (County Cork) Cullen