C
- (County Donegal) Craigbeefan
- (County Donegal) Cloghboy
- (County Donegal) Crannogeboy
- (County Donegal) Crumlin
- (County Donegal) Clogher
- (County Donegal) Clooney
- (County Donegal) Cummirk Bridge
- (County Donegal) Cavan
- (County Donegal) Corcam
- (County Donegal) Callan
- (County Donegal) Cloghroe
- (County Donegal) Corranagh
- (County Donegal) Corderry
- (County Donegal) Cloghernagore
- (County Donegal) Commeen
- (County Donegal) Crohy
- (County Donegal) Cormakilly
- (County Donegal) Cloghfin
- (County Donegal) Carrickcolman
- (County Donegal) Carrickbrack
- (County Donegal) Cloghfin
- (County Donegal) Creaghadoos
- (County Donegal) Cornagillah
- (County Donegal) Castledowey
- (County Donegal) Cloon
- (County Donegal) Cross
- (An Cabhán) Corville
- (An Cabhán) Callaghs
- (An Cabhán) Carn Cross Roads
- (An Cabhán) Commons Gate