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- (County Donegal) Rossbrackan
- (County Donegal) Raneany Bridge
- (County Donegal) Red Burn Bridge
- (County Donegal) Red Bridges
- (County Donegal) Raneely
- (County Donegal) Rotten Island
- (County Donegal) Roeckrow
- (County Donegal) Rossbeg
- (County Donegal) Rareagh Upper
- (County Donegal) Rashadoge
- (County Donegal) Raws Lower
- (County Donegal) Ringsend
- (County Donegal) Roosky Upper
- (County Donegal) Rossgeir
- (County Donegal) Rocktown
- (County Donegal) Raymoghy
- (County Donegal) Rutland Island
- (An Cabhán) Raleagh
- (An Cabhán) Raheelan
- (An Cabhán) Rivory
- (An Cabhán) Rinn
- (An Cabhán) Rakane
- (County Monaghan) Raferagh
- (County Monaghan) Rahans
- (County Monaghan) Radrum
- (County Monaghan) Rockfield
- (County Monaghan) Radeerpark
- (County Monaghan) Raconnell
- (County Monaghan) Rossmore
- (County Monaghan) Rossarrell