| 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 | |
| Bonaccorso | | - | Italian | |
| Bonaventura | | bo-nah-ven-TOO-rah | Italian | |
| Bongani | | - | Southern African, Zulu | |
| BonifÁC | | - | Czech, Hungarian | |
| Bonifacio | | bo-nee-FAH-cho (Italian), bo-nee-FAH-thyo (Spanish), bo-nee-FAH-syo (Latin American Spanish) | Italian, Spanish, Portuguese | |