| Name | Gender | Pronounced | Usage | Popularity |
|---|---|---|---|---|
| Boro | - | Croatian, Serbian | ||
| Borya | - | Russian | ||
| Borys | BAW-ris (Polish) | Polish, Ukrainian | ||
| Bosede | - | Western African, Yoruba | ||
| Botond | - | Hungarian | ||
| Boudicca | BOO-di-kə (English) | Ancient Celtic | ||
| Boyan | - | Bulgarian | ||
| Boyana | - | Bulgarian | ||
| Boyka | - | Bulgarian | ||
| Boyko | - | Bulgarian | ||
| Bozhidar | - | Bulgarian, Macedonian, Medieval Slavic | ||
| Bozhidara | - | Bulgarian | ||
| BrÂNduȘA | - | Romanian | ||
| BrÉAnainn | - | Ancient Irish | ||
| BrÜNhild | BRUYN-hilt (German) | German, Germanic Mythology |