C
- (Sligo) Cloongoonagh
- (Sligo) Cooleen
- (Sligo) Corray
- (Sligo) Claddagh
- (Sligo) Culdaly
- (Sligo) Corsallagh
- (Sligo) Cornaleck
- (Sligo) Carrownedan
- (Sligo) Carrownacreevy
- (Sligo) Carho
- (Sligo) Chapel Street
- (Sligo) Carrowcaslan
- (Sligo) Charlesfort
- (Sligo) Cannaghanally
- (Sligo) Carrowmably
- (Sligo) Clooneen
- (Sligo) Carrowpadeen
- (Sligo) Cloonycarney
- (Sligo) Cuffs Town
- (Sligo) Carns
- (Sligo) Clonnkeelaun
- (Sligo) Coolmeen
- (Sligo) Cabragh
- (Sligo) Castletown
- (Sligo) Cottage Island
- (Sligo) Church Island
- (Sligo) Carrowmore
- (Sligo) Culleenduff
- (Sligo) Carrowbunnauna
- (Sligo) Cregg