B
- (Mayo County) Bartrauve
- (Mayo County) Bunawillin
- (Roscommon) Ballintubber
- (Roscommon) Bellanagare
- (Mayo County) Bellavary
- (Roscommon) Ballyfarnan
- (Roscommon) Ballinameen
- (Roscommon) Ballyforan
- (Sligo) Ballynacarrow
- (Mayo County) Bohola
- (Mayo County) Ballycastle
- (Mayo County) Belcarra
- (Roscommon) Ballinlough
- (Mayo County) Bangor
- (Sligo) Ballydawley
- (Sligo) Ballintogher
- (Mayo County) Ballindine
- (Sligo) Ballincar
- (County Galway) Ballinderreen
- (Mayo County) Balla
- (County Leitrim) Ballinamore
- (Mayo County) Belmullet
- (County Galway) Ballygar
- (Sligo) Ballisodare
- (Sligo) Ballymote
- (Roscommon) Ballaghadereen
- (County Galway) Bearna
- (Mayo County) Ballyhaunis
- (Roscommon) Boyle
- (Mayo County) Ballinrobe