B
- (Mayo County) Ballinlough
- (Mayo County) Ballingarden
- (Mayo County) Belgarrow
- (Mayo County) Bellataleen
- (Mayo County) Buckfield
- (Mayo County) Bush Island
- (Mayo County) Bellass
- (Mayo County) Bunrawer
- (Mayo County) Ballyart
- (Mayo County) Boyogonnell
- (Mayo County) Boherhallagh
- (Mayo County) Ballinvoy
- (Mayo County) Ballintleva
- (Mayo County) Ballymacloughlin
- (Mayo County) Ballinhoe
- (Mayo County) Ballinlassa
- (Mayo County) Ballyrourke
- (Mayo County) Bohehs
- (Mayo County) Burnataunia
- (Mayo County) Ballaghfarna
- (Mayo County) Ballinlassa
- (Mayo County) Ballycarha
- (Mayo County) Bullaunmeneen
- (Mayo County) Barney
- (Mayo County) Barrackland
- (Mayo County) Burris
- (Mayo County) Bohoge
- (Mayo County) Ballinafad
- (County Galway) Boulard
- (County Galway) Baile na Creige