| Name | Gender | Pronounced | Usage | Popularity |
|---|---|---|---|---|
| BirutĖ | - | Lithuanian | ||
| Blanka | BLAHN-kah (Czech, Slovak, Polish, Croatian), BLAWN-kaw (Hungarian) | Czech, Slovak, Polish, Hungarian, Croatian | ||
| BoglÁRka | - | Hungarian | ||
| BoldizsÁR | - | Hungarian | ||
| BonifÁC | - | Czech, Hungarian | ||
| BorÓKa | - | Hungarian | ||
| BorbÁLa | - | Hungarian | ||
| Botond | - | Hungarian | ||
| Brigitta | bree-GI-tah (German) | German, Dutch, Hungarian | ||
| Bronislovas | - | Lithuanian | ||
| Bronius | - | Lithuanian |