| Buchi neri | Agujero negro |
| Buchillon | Buchillon |
| buchino | pinchazo |
| Buchloe | Buchloe |
| Buchs | Buchs |
| Bucintoro | Bucintoro |
| Buckingham Palace | Palacio de Buckingham |
| Buckinghamshire | Buckinghamshire |
| Buckminster Fuller | Richard Buckminster Fuller |
| buco | pinchazo |
| buco della serratura | ojo de la cerradura |
| buco nero | agujero negro |
| buco nero supermassiccio | agujero negro supermasivo |
| Bucoliche | Bucólicas |
| bucolico | campesino |
| Bucorvus | Bucorvus abyssinicus |
| Bucovina | Bucovina |
| Bud Powell | Bud Powell |
| Bud Spencer | Bud Spencer |
| Buda | Buda |
| Budai | Hotei |
| Budapest | Budapest |
| Budapest Honvéd FC | Budapest Honvéd FC |
| Budda | Buda |
| Buddha | Buda |
| Buddha di Bamiyan | Budas de Bāmiyān |
| Buddhismo | Budismo |
| Buddhismo Chan | Jan |
| Buddhismo giapponese | Budismo japonés |
| Buddhismo greco | Grecobudismo |
| Buddhismo Mahayana | Mahāyāna |
| Buddhismo Nichiren | Budismo Nichiren |
| Buddhismo Shingon | Budismo Shingon |
| Buddhismo Theravada | Theravāda |
| Buddhismo tibetano | Budismo tibetano |
| Buddhismo Vajrayana | Vajrayāna |
| Buddhismo Zen | Zen |
| buddismo | budismo |
| buddista | budista |
| buddistico | budista |
| Buddleja | Buddleja |
| Buddy Holly | Buddy Holly |
| Budejovicky Budvar | Budweiser |
| Budelière | Budelière |
| budella | intestino |
| budget | presupuesto |
| budgetario | presupuestario |
| Budicca | Boudica |
| budino | pudín |
| budino di riso | arroz con leche |
| Budorcas taxicolor | Budorcas taxicolor |
| Budua | Budva |
| Budō | Budō |
| bue | novillo |
| bue tibetano | yak |
| Buell Motorcycle Company | Buell |
| Buena Vista Distribution | Buena Vista Distribution |
| Buenaventura Durruti | Buenaventura Durruti |
| Buenos Aires | Buenos Aires |
| bufalo | bisonte |
| bufalo indiano | búfalo de la India |
| Bufer | Tormenta |
| bufera di neve | nevada |
| buffa | divertido |
| Buffalo | Buffalo |
| Buffalo Bill | Buffalo Bill |
| Buffalo Bill e gli indiani | Buffalo Bill y los indios |
| Buffalo Bills | Buffalo Bills |
| Buffalo Sabres | Buffalo Sabres |
| Buffer | Buffer de datos |
| Buffer overflow | Desbordamiento de búfer |
| buffet | aparador |
