A
- (Mayo County) Aillemore
- (Mayo County) Ara North
- (Mayo County) Aghaward
- (Mayo County) Ardhoom
- (Mayo County) Ardagh
- (Mayo County) Ardvally
- (Mayo County) Attymass
- (Mayo County) Altnabrocky
- (Mayo County) Aughness
- (Mayo County) Attavally
- (Mayo County) Annagh
- (Mayo County) Aghadoon
- (Mayo County) Annie Brady Bridge
- (County Leitrim) Annaduff
- (Roscommon) Ardcarn
- (Mayo County) Annagh island
- (Mayo County) Ard Eoghain
- (Mayo County) An Ghleadraigh
- (Mayo County) Aughernagalliagh
- (Mayo County) An Baile Glas
- (Mayo County) An Baile Nua
- (Mayo County) An Tearmann
- (Mayo County) An Mullach Rua
- (Mayo County) An Bheairic
- (Mayo County) An Droim
- (Mayo County) An Chrois
- (Mayo County) An Chrois Thoir
- (Mayo County) Ardmore
- (Mayo County) Altderg
- (Mayo County) Alliconaun