C
- (Roscommon) Cloonargid
- (Roscommon) Curraghsallagh
- (Roscommon) Carrownaknocraun
- (Roscommon) Curraghard
- (Roscommon) Cloontowart
- (Roscommon) Cloonmaul
- (Roscommon) Corracoggil South
- (Roscommon) Corracoggil North
- (Roscommon) Calveagh Lower
- (Roscommon) Clveagh Upper
- (Roscommon) Currinah
- (Roscommon) Cashelcolaun
- (Roscommon) Casherlard
- (Roscommon) Crunaun
- (Roscommon) Carrownurlar
- (Roscommon) Churchstreet
- (Roscommon) Cloonchambers
- (Roscommon) Creglahan
- (Roscommon) Clooncraffield
- (Roscommon) Cloonaff
- (Roscommon) Cloonalis
- (Roscommon) Carradooan
- (Roscommon) Carrowbaun
- (Roscommon) Cloonree
- (Roscommon) Coolagarry
- (Roscommon) Cloonbunny
- (Roscommon) Cuiltyboe
- (Roscommon) Cloonmullin
- (Roscommon) Clerragh
- (Roscommon) Curreentorpan