| Boletaceae | Boletaceae |
| Boletales | Boletales |
| bolete | bolet |
| boletus | bolet |
| Boletus aereus | Bolet bronzé |
| Boletus aureus | Bolet bronzé |
| Boletus badius | Bolet bai |
| boletus edulis | cèpe |
| Boletus erythropus | Bolet à pied rouge |
| Boleyn Ground | Boleyn Ground |
| Bolgars | Bulgares |
| Bolgenach | Bolgenach |
| Bolikhamsai | Province de Borikhamxay |
| Bolingbroke Castle | Bolingbroke Castle |
| Bolivarian Alternative for the Americas | Alternative bolivarienne pour les Amériques |
| Bolivarian Games | Jeux bolivariens |
| Bolivarianism | Bolivarisme |
| Bolivia | Bolivie |
| Bolivia national football team | Équipe de Bolivie de football |
| Bolivian | Bolivien |
| Bolivian boliviano | Boliviano |
| Bolivian gas conflict | Guerre du gaz |
| Bolivian slaty antshrike | batara de Bolivie |
| Boljevac | Boljevac |
| Boljevci | Boljevci |
| Bolken | Bolken |
| Bolko II of Świdnica | Bolko II le Petit |
| boll | capsule |
| boll weevil | anthonome |
| Bollandist | Société des Bollandistes |
| bollard | borne |
| Bollebygd Municipality | Commune de Bollebygd |
| Bollendorf | Bollendorf |
| Bollendorf-Pont | Bollendorf-Pont |
| Bolligen | Bolligen |
| Bollinger | Champagne Bollinger |
| Bollinger bands | Bandes de Bollinger |
| Bollnäs Municipality | Commune de Bollnäs |
| bollock | couille |
| bollocks | couillon |
| Bollodingen | Bollodingen |
| Bollons Island | Île Bollons |
| Bollywood | Bollywood |
| Bolo Rei | Galette des Rois |
| Bolo Yeung | Bolo Yeung |
| Bologna | Bologne |
| Bologna Accord | Processus de Bologne |
| Bologna declaration | Processus de Bologne |
| Bologna massacre | Attentat de la gare de Bologne |
| Bologna process | Processus de Bologne |
| bolognese | sauce bolognaise |
| Bolognese Republic | République bolonaise |
| Bolognese School | École de peinture de Bologne |
| Bolometers | Bolometre |
| Bolometric correction | Correction bolometrique |
| bolometric magnitude | magnitude bolométrique |
| boloney | idioties |
| Bolozon | Bolozon |
| Bolsa de Taiwán | Bourse de Taiwan |
| Bolsa Mexicana de Valores | Bourse du Mexique |
| Bolshaya Kokshaga River | Bolchaïa Kokchaga |
| Bolshevik | Bolchevik |
| bolshevism | bolchevisme |
| Bolshie | Bolchevik |
| Bolshoi Theatre | Théâtre Bolchoï |
| Bolshoy Irgiz River | Irguiz |
| Bolshoy Kamen | Bolchoï Kamen |
| Bolshoye Maslennikovo | Maslennikovo |
| Bolshy | Bolchevik |
| Bolsjevik | Bolchevik |
| Bolson Tortoise | Gophère à bords jaunes |
| bolster | traversin |
| Bolsterlang | Bolsterlang |
| bolt | boulon |
| bolt cutter | coupe-boulons |
| Boltaña | Boltaña |
| Boltigen | Boltigen |
| Bolton | Bolton |
| Boltysh crater | Astroblème de Boltysh |
| Boltzmann constant | Constante de Boltzmann |
| Boltzmann distribution | Distribution de Boltzmann |
| Boltzmann equation | Équation de Boltzmann |
| Bolu Province | Bolu |
| Boluspor | Boluspor K |
| Bolyeriidae | Bolyeriidae |
| Bolzano | Bolzano |
| Bolívar | Bolívar |
| Bolívar Department | Bolívar |
| Bolívar Partido | Bolivar |
| Bolívar Province | Bolívar |
| Bolívar Square | Plaza de Bolívar |
| BOM | Bombe |
| Bom Jesus funicular | Funiculaire de Bom Jesus |
| Boma | Boma |
