| Name | Gender | Pronounced | Usage | Popularity |
|---|---|---|---|---|
| Blandine | - | French | ||
| Blandinus | - | Ancient Roman | ||
| Blandus | - | Ancient Roman | ||
| Blasius | - | Ancient Roman | ||
| Blaze | BLAYZ | English (Modern) | ||
| Blondie | BLAHN-dee | English (Rare) | ||
| Blossom | BLAH-səm | English | ||
| Blythe | BLIEDH | English (Rare) | ||
| BoŠKo | - | Serbian, Croatian, Slovene | ||
| BoŠTjan | - | Slovene | ||
| BoŽEna | - | Czech, Slovak, Slovene, Croatian, Serbian | ||
| BoŽIdar | - | Serbian, Croatian, Slovene | ||
| BoŽO | BO-zho | Croatian, Serbian, Slovene | ||
| Boadicea | - | Ancient Celtic (Latinized) | ||
| Bob | BAHB (English), BAWB (Dutch) | English, Dutch |