| Name | Gender | Pronounced | Usage | Popularity |
|---|---|---|---|---|
| Biaggio | - | Italian (Rare) | ||
| Biff | BIF | English (Rare) | ||
| Blondie | BLAHN-dee | English (Rare) | ||
| Blythe | BLIEDH | English (Rare) | ||
| BolesŁAwa | baw-le-SWAH-vah | Polish (Rare) | ||
| Boleslava | - | Czech (Rare), Russian (Rare) | ||
| Boniface | BAWN-ə-fays (English), BAWN-ə-fəs (English) | French, English (Rare) | ||
| Braidy | BRAY-dee | English (Rare) | ||
| Brand | BRAND | English (Rare) | ||
| Branda | BRAN-də | English (Rare) | ||
| BratumiŁ | brah-TUW-meew | Polish (Rare) | ||
| Briar | BRIE-ər | English (Rare) | ||
| Brigham | BRIG-əm | English (Rare) | ||
| Briony | BRIE-ən-ee | English (Rare) | ||
| Briscoe | BRIS-ko | English (Rare) |