R
- (Sligo) Redhill
- (Mayo County) Rathlackan
- (Mayo County) Rathgranagher
- (Mayo County) Ratheskin
- (Mayo County) Rake Street
- (Mayo County) Raheens
- (Mayo County) Raheen
- (County Galway) Raheen
- (County Galway) Rock Island
- (County Galway) Rossaveal
- (Mayo County) Roonah Quay
- (County Leitrim) Redbrae
- (Roscommon) Riversdale
- (Sligo) Roadstown
- (Sligo) Rathdoony More
- (Sligo) Rockfield
- (Sligo) Rue Cross Roads
- (Sligo) Rathosey
- (Sligo) Rover
- (Sligo) Rathcormack
- (Sligo) Raghly
- (County Leitrim) Rocktown
- (County Leitrim) Ross
- (County Galway) Reyrawer
- (County Galway) Roo
- (County Galway) Redflag Island
- (County Galway) Rushennamanagh
- (County Galway) Rossroe Island
- (County Galway) Rusheeny
- (County Galway) Roevehagh