| Name | Gender | Pronounced | Usage | Popularity |
|---|---|---|---|---|
| Bor | - | Slovene | ||
| Borghildr | - | Ancient Scandinavian, Norse Mythology | ||
| Boris | bah-REES (Russian), BO-ris (German), BAWR-is (English) | Bulgarian, Russian, Slovene, Croatian, Serbian, Macedonian, Georgian, German, History | ||
| Borislav | bah-ree-SLAHF (Russian) | Bulgarian, Serbian, Croatian, Slovene, Russian, Medieval Slavic | ||
| Borut | - | Slovene | ||
| Boudicca | BOO-di-kə (English) | Ancient Celtic | ||
| Boyce | BOIS | English | ||
| Boyd | BOID (English) | Scottish, English | ||
| BrÉAnainn | - | Ancient Irish | ||
| Brad | BRAD | English | ||
| BradÁN | - | Ancient Irish | ||
| Braden | BRAY-dən | English, Irish | ||
| Bradford | BRAD-fərd | English | ||
| Bradley | BRAD-lee | English | ||
| Brady | BRAY-dee | English, Irish |