| BohumÍR | | - | Czech, Slovak | |
| Bohumil | | - | Czech, Slovak | |
| Bohuslav | | bo-hoo-SLAHV (Ukrainian) | Czech, Slovak, Ukrainian | |
| Boipelo | | - | Southern African, Tswana | |
| Boitumelo | | - | Southern African, Tswana | |
| Bojan | | BO-yahn (Serbian, Croatian, Macedonian) | Serbian, Croatian, Slovene, Macedonian | |
| Bojana | | - | Slovene, Macedonian, Serbian, Croatian | |
| BolÍVar | | - | Spanish (Latin American) | |
| Bolanle | | - | Western African, Yoruba | |
| Bolek | | BAW-lek | Polish | |
| BolesŁAw | | baw-LE-swahf | Polish | |
| BolesŁAwa | | baw-le-SWAH-vah | Polish (Rare) | |
| Boleslav | | - | Czech, Russian, Medieval Slavic | |
| Boleslava | | - | Czech (Rare), Russian (Rare) | |
| Bonaventure | | bawn-ə-VEN-chər (English) | History | |