| budget | presupuesto |
| budget policy | política presupuestaria |
| budgetary | presupuestario |
| budgeting | presupuesto |
| Budini | Budini |
| Budva | Budva |
| budyonovka | budiónovka |
| Budějovický Budvar | Budweiser |
| Budō | Budō |
| BUE | Arco |
| Buell Motorcycle Company | Buell |
| Buena Vista Distribution | Buena Vista Distribution |
| Buenaventura Durruti | Buenaventura Durruti |
| Buenos Aires | Buenos Aires |
| Buenos Aires Botanical Garden | Jardín Botánico de Buenos Aires |
| Buenos Aires Cabildo | Cabildo de Buenos Aires |
| Buenos Aires Metro | Subte de Buenos Aires |
| Buenos Aires Metropolitan Cathedral | Catedral Metropolitana de Buenos Aires |
| Buenos Aires Province | Provincia de Buenos Aires |
| Buenos Aires Stock Exchange | Bolsa de Comercio de Buenos Aires |
| Buenos Aires Zoo | Zoológico de Buenos Aires |
| buff | pulir |
| Buff-necked Ibis | Theristicus caudatus |
| buffalo | bisonte |
| Buffalo Bill | Buffalo Bill |
| Buffalo Bills | Buffalo Bills |
| Buffalo Sabres | Buffalo Sabres |
| Buffalo Soldier | Soldados Búfalo |
| buffer | regular |
| Buffer overflow | Desbordamiento de búfer |
| buffer solution | regulador |
| buffer state | estado tapón |
| Buffer storage | Buffer de datos |
| buffet | aparador |
| Buffet lunch | Lange |
| buffing | pulimento |
| bufflehead | Porrón coronado |
| buffoon | clown |
| buffoonery | bufonadas |
| Buffy Summers | Buffy Summers |
| Buffy the Vampire Slayer | Buffy la cazavampiros |
| Bufotenin | Bufotenina |
| bug | chinche |
| Bug hole | Domo geodésico |
| bug spray | repelente de insectos |
| Bug tracking system | Sistema de seguimiento de errores |
| Buganda | Buganda |
| Bugatti | Bugatti |
| Bugatti Automobiles SAS | Bugatti Automobiles SAS |
| Bugatti Circuit | Bugatti |
| bugbear | pesadilla |
| Buggles | The Buggles |
| buggy | calesa |
| Buggy the Clown | Buggy el payaso |
| bughouse chess | Pasapiezas |
| Bugia | Bugía |
| Buginase Language | Idioma buginés |
| Buginese language | Idioma buginés |
| bugle | bugle |
| bugler | corneta |
| Bugs Bunny | Bugs Bunny |
| Bugsy Siegel | Bugsy Siegel |
| Buhen | Buhen |
| build | fabricar |
