A
- (Sligo) Ardlaherty
- (Mayo County) Abbeytown
- (County Galway) Abbey
- (Mayo County) Aasleagh
- (Roscommon) Aghoo
- (Roscommon) Altagowlan
- (Sligo) Ardlona
- (Sligo) Annaghmore
- (Sligo) Ardkeeran
- (Sligo) Ardloy
- (Sligo) Achonry
- (Sligo) Annagh
- (Sligo) Ardogelly
- (Sligo) Altans
- (Sligo) Annaghgowla Island
- (Sligo) Aghoo
- (Sligo) Aghamore
- (Sligo) Ardnaglass Upper
- (Sligo) Ardboline
- (County Leitrim) Aghakilmore
- (County Leitrim) Annaghkeenly
- (County Leitrim) Aghnagollop
- (County Leitrim) Aghagrania
- (County Leitrim) Altakeeran
- (County Leitrim) Annadale
- (County Leitrim) Attimanus
- (County Leitrim) Aghadruminsh
- (County Leitrim) Arderry
- (County Leitrim) Aghoo
- (County Leitrim) Annagh Upper