| Name | Gender | Pronounced | Usage | Popularity |
|---|---|---|---|---|
| Blagoy | - | Bulgarian | ||
| Blagun | - | Bulgarian, Macedonian | ||
| Blaguna | - | Macedonian, Bulgarian | ||
| Blanca | BLAHN-kah | Spanish | ||
| Blanchard | - | Ancient Germanic | ||
| Blandina | - | Ancient Roman | ||
| Blandinus | - | Ancient Roman | ||
| Blandus | - | Ancient Roman | ||
| Blanka | BLAHN-kah (Czech, Slovak, Polish, Croatian), BLAWN-kaw (Hungarian) | Czech, Slovak, Polish, Hungarian, Croatian | ||
| Blas | BLAHS | Spanish | ||
| Blasius | - | Ancient Roman | ||
| Blazh | - | Medieval Slavic | ||
| Blazhe | - | Macedonian | ||
| Blerta | BLER-tah | Albanian | ||
| Blondie | BLAHN-dee | English (Rare) |