Iontrálacha san Fhoclóir Nua Béarla-Gaeilge a bhrabhsáil
- Bolshevik
- Bolshevism
- Book of Common Prayer
- Book of Durrow
- Book of Kells
- Boolean
- Borneo
- Bosnia and Herzegovina
- Bosnian
- Boston
- Botany Bay
- Botswana
- Boxing Day
- Boyle's Law
- Boyne
- Brahmin
- Brandon Mountain
- Brasilia
- Bratislava
- Brazil
- Brazil nut
- Brazilian
- Brazilian Highlands
- Brazzaville
- Brehon laws
- Breton
- Brexit
- Brian Boru
- Bridgetown
- Brit
- Britain
- British
- British Empire
- British Isles
- Briton
- Brittany
- Bronze Age
- Brosna
- Brunei
- Brussels
- Brussels sprout
- Bucharest
- Budapest
- Buddhism
- Buddhist
- Buenos Aires
- Bujumbura
- Bulgaria
- Bulgarian
- Bundoran