| boîte à ordures | cubo de la basura |
| boîte à pilules | cajita para píldoras |
| Boîte à rythmes | Caja de ritmos |
| boîte à thé | cajita para el té |
| Boîte-S | Caja de sustitución |
| boïard | boyardo |
| Boïko Borisov | Boiko Borísov |
| Bořivoj Ier de Bohême | Borivoj I de Bohemia |
| Bože Pravde | Bože Pravde |
| Božena Němcová | Božena Němcová |
| Božidar Maljković | Bozidar Maljkovic |
| BP | BP |
| BPM | Bpm |
| BR | Brindisi |
| Bra | Bra |
| Brabant | Brabante |
| Brabant flamand | Brabante Flamenco |
| Brabant Septentrional | Brabante Septentrional |
| Brabant wallon | Brabante |
| Brabant-Septentrional | Brabante Septentrional |
| Brabançon | Bélgico |
| Brabançonne | La Brabançonne |
| Brabham Racing Organisation | Brabham Racing Organisation |
| Braccio da Montone | Braccio da Montone |
| bracelet | correa de reloj de pulsera |
| bracelet de montre | correa de reloj de pulsera |
| bracelet-montre | reloj de pulsera |
| brachial | braquial |
| Brachiopoda | Brachiopoda |
| Brachyceratops | Brachyceratops |
| Brachycérophilie | Paja mental |
| Brachylagus idahoensis | Brachylagus idahoensis |
| Brachylophosaurus | Brachylophosaurus |
| Brachylophus | Brachylophus |
| Brachylophus vitiensis | Brachylophus vitiensis |
| Brachypelma smithi | Brachypelma smithi |
| Brachyura | Brachyura |
| brachyurien | perteneciente a los braquiuros |
| Bracketing | Bracketing |
| Braconidae | Braconidae |
| braconide | bracónido |
| braconnage | caza furtiva |
| braconner | cazar ilegalmente |
| braconnier | cazador furtivo |
| bractée | bráctea |
| Brad Bird | Brad Bird |
| Brad Delson | Brad Delson |
| Brad Pitt | Brad Pitt |
| braderie | oferta |
| Bradford | Bradford |
| Bradford City Association Football Club | Bradford City Association Football Club |
| Bradley Center | Bradley Center |
| Bradley Joseph | Bradley Joseph |
| Bradley Roland Will | Brad Will |
| bradycardie | bradicardia |
| Bradykinine | Bradiquinina |
| Bradypus | Bradypus trydactilus |
| Braga | Braga |
| Bragance | Braganza |
| Braggio | Braggio |
| Bragi | Bragi |
| braguette | bragueta |
| Brahma Kumaris | Brahma Kumaris |
| Brahmacharya | Brahmacharya |
| Brahmagupta | Brahmagupta |
| Brahman | Brahman |
| brahmane | brahmán |
| Brahmanisme | Brahmanismo |
| Brahmapoutre | Brahmaputra |
| Brahmo Samaj | Brahmo Samaj |
| Brahmâ | Brahmā |
| Braie | Braga |
| braille | braille |
| brailler | llamar |
| braiment | rebuzno |
| Brain | Cerebro |
| brain-trust | grupo de expertos |
| Brainbuster | Lucha libre profesional |
| Braindead | Braindead |
| Braine | Braine |
| Brainfuck | Brainfuck |
| Brainstorm | Brainstorm |
| Brainstorming | Lluvia de ideas |
| braire | rebuznar |
