| Bogomil | | - | Bulgarian, Macedonian | |
| Bohdan | | boh-DAHN (Ukrainian) | Czech, Ukrainian | |
| Bohuslav | | bo-hoo-SLAHV (Ukrainian) | Czech, Slovak, Ukrainian | |
| Bohuslava | | bo-hoo-SLAH-vah (Ukrainian) | Czech, Ukrainian | |
| Boipelo | | - | Southern African, Tswana | |
| Boitumelo | | - | Southern African, Tswana | |
| Bojan | | BO-yahn (Serbian, Croatian, Macedonian) | Serbian, Croatian, Slovene, Macedonian | |
| Bojana | | - | Slovene, Macedonian, Serbian, Croatian | |
| Bojidar | | - | Bulgarian | |
| BolÍVar | | - | Spanish (Latin American) | |
| Bolanle | | - | Western African, Yoruba | |
| BoldizsÁR | | - | Hungarian | |
| Boleslav | | - | Czech, Russian, Medieval Slavic | |
| Boleslava | | - | Czech (Rare), Russian (Rare) | |
| Bolormaa | | - | Mongolian | |