| blocchetto | álbum |
| blocco | manzana |
| Blocco Continentale | Bloqueo Continental |
| Blocco del Quebec | Bloc Québécois |
| Blocco di Berlino | Bloqueo de Berlín |
| blocco di legno | tronco |
| blocco di partenza | taco de partida |
| Blocco Gesuita e Estancias di Córdoba | El Camino de las Estancias Jesuíticas |
| Blocco orientale | Bloque del Este |
| blocco stradale | barricada |
| Bloemfontein | Bloemfontein |
| blog | bitácora |
| bloggare | bloguear |
| Blogroll | Blogroll |
| Blois | Blois |
| Blonay | Blonay |
| Blondi | Blondi |
| Blood Diamond - Diamanti di sangue | Diamante de sangre |
| Blood on the Dance Floor | Blood on the dance floor |
| Bloodhound Gang | Bloodhound Gang |
| Bloody Mary | Bloody Mary |
| Bloody Sunday | Domingo Sangriento |
| Bloomberg Television | Bloomberg TV |
| Bloomsbury | Bloomsbury Publishing |
| Bloomsbury Group | Círculo de Bloomsbury |
| Bloomsbury Publishing Plc | Bloomsbury Publishing |
| Blot-Sven di Svezia | Blot-Sven |
| Bloutière | Bloutière |
| Blow Up Your Video | Blow Up Your Video |
| Blow-Up | Blow-Up |
| Blowfish | Blowfish |
| blu | azul |
| blu 'm | celeste |
| Blu di metilene | Azul de metileno |
| blu marino | azul marino |
| blu notte | azul oscuro |
| blu petrolio | azul petróleo |
| blu reale | esmalte de cobalto |
| blu scuro | azul oscuro |
| Blu-express | Blu-express |
| Blu-ray Disc | Blu-ray |
| Blue | Azul |
| Blue Beetle | Escarabajo Azul |
| Blue box | Bluebox |
| Blue Gene | Blue Gene |
| Blue Marble | La canica azul |
| Blue Mountains | Ered Luin |
| Blue note | Nota de blues |
| Blue Train | Blue Train |
| Blue Öyster Cult | Blue Öyster Cult |
| Bluebeat | Blue Beat |
| Blueberry | El Teniente Blueberry |
| Bluefish | Bluefish |
| Bluegrass | Bluegrass |
| Blues | Blues |
| Blues for the Red Sun | Blues for the Red Sun |
| Blues punk | Punk blues |
| Blues rock | Blues rock |
| Bluetongue | Virus de la lengua azul |
| Bluetooth | Bluetooth |
| bluffatore | farolero |
| bluffatrice | fanfarrona |
| Blumberg | Bloomberg |
| Blumenstein | Blumenstein |
| Blur | Blur |
| blusa | delantal |
| Bluto | Bruto |
| Blériot XI | Blériot XI |
| Blót | Blót |
| BMW | BMW |
| BMX | BMX |
| BN | Benevento |
| BNC | BNC |
| bo | bah |
| Bo Diddley | Bo Diddley |
| boa | boa |
| Boa Vista | Boa Vista |
| Boabdil di Granada | Boabdil |
| Boadella i les Escaules | Boadella del Ampurdán |
| boara | vaquero |
| Board of European Students of Technology | Consejo de Estudiantes Europeos de Tecnología |
| boaro | vaquero |
| boato sonico | explosión sónica |
| Boavista Futebol Clube | Boavista Futebol Clube |
| bob | trineo de carreras |
| Bob Beamon | Bob Beamon |
| Bob Dylan | Bob Dylan |
| Bob Geldof | Bob Geldof |
| Bob Holly | Bob Holly |
| Bob Kane | Bob Kane |
| Bob Lazar | Bob Lazar |
| Bob Marley | Bob Marley |
| Bob McAdoo | Bob McAdoo |
| Bob Pettit | Bob Pettit |
| Bob Rafelson | Bob Rafelson |
| Bob Sinclar | Bob Sinclar |
| Boba Fett | Boba Fett |
| Bobbejaan Schoepen | Bobbejaan Schoepen |
| Bobbia | Porridge |
| Bobby Charlton | Bobby Charlton |
| Bobby Fischer | Bobby Fischer |
| Bobby Moore | Bobby Moore |
| Bobby Robson | Bobby Robson |
| Bobby Sands | Bobby Sands |
| Bobby Zamora | Bobby Zamora |
| Bobbysocks | Bobbysocks |
| Bobigny | Bobigny |
| bobina | carrete |
| bobina di arresto | bobina de reactancia |
