C
- (Kilkenny) Carran
- (Meath) Carnaross
- (Kildare) Carbury
- (Uíbh Fhailí) Cangort
- (Laois) Camross
- (Wexford) Camaross
- (An Longfort) Caltragh
- (Uíbh Fhailí) Cadamstown
- (Kilkenny) Carrigeen
- (Kilkenny) Curraghmartin
- (Kilkenny) Clogga
- (Kilkenny) Carriganurra
- (Wexford) Connagh
- (Wexford) Connagh Cross Roads
- (Wexford) Curraghmore
- (Wexford) Cloonagh
- (Wexford) Cullenstown
- (Wexford) Coolseskin
- (Wexford) Coolishal
- (Wexford) Coolboy
- (Wexford) Coolcull
- (Wexford) Cullenstown
- (Wexford) Castlehaystown
- (Wexford) Cushenstown
- (Wexford) Cassagh
- (Wexford) Courthoyle
- (Kilkenny) Carrickcloney
- (Wexford) Cull Island
- (Wexford) Croase
- (Wexford) Cohunon