R
- (Sligo) Rathrower
- (Sligo) Rathmoney
- (Sligo) Rusheen
- (Sligo) Ross
- (Sligo) Rosmore
- (County Leitrim) Rubbal
- (County Leitrim) Rathbaun
- (Sligo) Rockbrook
- (Sligo) Rooghan
- (Sligo) Rathmulpatrick
- (Sligo) Rannatruffaun
- (Mayo County) Roy
- (Mayo County) Roundfort
- (Mayo County) Rosturk
- (Mayo County) Ross West
- (Mayo County) Ross Port
- (County Leitrim) Rossinver
- (County Galway) Rosmuck
- (County Galway) Rosmore
- (County Galway) Roskeeda
- (County Galway) Rosdaul
- (Mayo County) Roosky
- (Mayo County) Roonkeel
- (Roscommon) Rookwood
- (Roscommon) Rockhill
- (Roscommon) Rockfield
- (County Leitrim) Rivers Town
- (County Galway) Renvyle
- (County Galway) Rinville
- (County Galway) Rinn