A
- (Clare) Ashtree Cross Roads
- (County Tipperary) Ahane
- (County Tipperary) Ahane Cross Roads
- (County Tipperary) Ahane Bridge
- (Kerry) Ayle
- (Kerry) Affouley
- (Kerry) Acres
- (Kerry) Ahascra
- (Kerry) Ardagh
- (Kerry) Aghanagran Lower
- (Clare) Aughrim
- (Kerry) Aughils
- (Clare) Aughboy
- (County Tipperary) Athnid
- (Limerick City and County Council) Athlacca
- (County Cork) Athabatteen
- (Kerry) Astee
- (Limerick City and County Council) Ashford
- (Kerry) Arnagragh
- (Clare) Ardsollus Bridge
- (Limerick City and County Council) Ardpatrick
- (County Cork) Ardgroom
- (County Cork) Ardfield
- (Kerry) Ardea
- (County Tipperary) Ardcrony
- (Kerry) Ardamore
- (County Cork) Araglin
- (County Waterford) Annestown
- (Kerry) Annagh Island
- (County Tipperary) Annacarty