| Brontotherium | Brontotherium |
| Brontë | Sorelle Brontë |
| Bronx | Bronx |
| bronze | di bronzo |
| Bronze Age | Età del bronzo |
| Bronze Age Europe | Età del bronzo |
| Bronze corydoras | Corydoras aeneus |
| bronze medal | medaglia di bronzo |
| Bronze sculpture | Bronzo |
| Bronze Star Medal | Bronze Star Medal |
| Bronze Wolf | Lupo di Bronzo |
| Bronze-winged Duck | Anas specularis |
| bronzed | abbronzato |
| Bronzino | Agnolo Bronzino |
| Bronzolo | Bronzolo |
| bronzy | abbronzato |
| brooch | spilla |
| brooches | spillette |
| brood | prole |
| brood about | rimuginare |
| brood over | preoccuparsi per |
| brood upon | rimuginare |
| brooded | covata |
| brooding | malinconico |
| broody | meditabondo |
| brook | ruscello |
| Brook Taylor | Brook Taylor |
| Brooke | Bruck am Ziller |
| Brookite | Brookite |
| Brooklyn | Brooklyn |
| Brooklyn Bridge | Ponte di Brooklyn |
| Brooklyn class cruiser | Classe Brooklyn |
| Brooklyn Rules | Brooklyn Rules |
| broom | scopa |
| Broomball | Broomball |
| broomstick | manico di scopa |
| Bros. | Fratelli |
| Brose Baskets | Brose Baskets |
| broth | brodo |
| brothel | casino |
| brother | fratello |
| Brother Alois | Alois Löser |
| brother in law | cognato |
| Brother Industries | Brother |
| brother-in-law | cognato |
| brotherhood | fratellanza |
| Brotherhood of Mutants | Confraternita dei mutanti malvagi |
| Brotherhood of Saints Cyril and Methodius | Confraternita dei Santi Cirillo e Metodio |
| Brotherhood of the Wolf | Il patto dei lupi |
| brotherliness | fratellanza |
| brotherly | fraterno |
| Brothers | Fratelli |
| brothers and sisters | fratelli |
| Brothers Grimm | Fratelli Grimm |
| Brothers in Arms | Brothers in Arms |
| Brothers of Charity | Fratelli della Carità |
| Brothers of Our Lady of Lourdes | Fratelli di Nostra signora di Lourdes |
| Brothers of the Sacred Heart | Fratelli del Sacro Cuore |
| Brou-sur-Chantereine | Brou-sur-Chantereine |
| brought | addotto |
| brought back | riportato |
| brought together | affiatato |
| brouhaha | vocio |
| Brousse-le-Château | Brousse-le-Château |
| Brouwer fixed point theorem | Teorema del punto fisso di Brouwer |
| Brouwerij de Koningshoeven | La Trappe |
| Brovst | Brovst |
| brow | passerella da sbarco |
| browbeat | intimidire |
| browbeating | minaccia |
| brown | rosolare |
| Brown alga | Phaeophyta |
| Brown algae | Phaeophyta |
| brown bear | orso bruno |
| Brown Bess | Brown Bess |
| Brown Booby | Sula leucogaster |
| Brown bream | Abramis brama |
| Brown Cave Salamander | Speleomantes genei |
| brown dwarf | nana bruna |
| Brown dwarf star | Stelle nane brune |
| Brown Eared Pheasant | Crossoptilon mantchuricum |
| Brown Falcon | Falco berigora |
| Brown HT | Marrone HT |
| Brown long-eared bat | Plecotus auritus |
| brown noser | leccaculo |
| Brown rat | Rattus norvegicus |
| Brown roll-rim | Paxillus involutus |
| brown sugar | zucchero grezzo |
| Brown Tinamou | Crypturellus obsoletus |
| Brown Township | Brown Township |
