B
- (An Longfort) Ballymahon
- (Wexford) Bunclody
- (Fingal County) Balrothery
- (Wicklow) Baltinglass
- (County Carlow) Bagenalstown
- (Fingal County) Bayside
- (Louth) Blackrock
- (Wicklow) Blessington
- (Uíbh Fhailí) Birr
- (Fingal County) Ballymun
- (Fingal County) Baldoyle
- (Dublin City) Ballyfermot
- (Dublin City) Beaumont
- (Dún Laoghaire-Rathdown) Blackrock
- (Dún Laoghaire-Rathdown) Balally
- (South Dublin) Ballyboden
- (Fingal County) Blanchardstown
- (Fingal County) Balbriggan
- (Wicklow) Bray