| Name | Gender | Pronounced | Usage | Popularity |
|---|---|---|---|---|
| Borislav | bah-ree-SLAHF (Russian) | Bulgarian, Serbian, Croatian, Slovene, Russian, Medieval Slavic | ||
| Borisu | - | Medieval Slavic | ||
| Borivoi | - | Medieval Slavic | ||
| Borko | - | Croatian, Serbian, Macedonian | ||
| Borna | - | Croatian | ||
| Boro | - | Croatian, Serbian | ||
| Bosede | - | Western African, Yoruba | ||
| Botros | - | Arabic, Coptic | ||
| Boudewijn | BOW-də-vien, BOW-də-wien | Dutch | ||
| Boudicca | BOO-di-kə (English) | Ancient Celtic | ||
| Boulos | - | Arabic | ||
| Boutros | - | Arabic, Coptic | ||
| Boyd | BOID (English) | Scottish, English | ||
| Bozhena | - | Medieval Slavic | ||
| Bozhidar | - | Bulgarian, Macedonian, Medieval Slavic |