| Name | Gender | Pronounced | Usage | Popularity |
|---|---|---|---|---|
| BratumiŁ | brah-TUW-meew | Polish (Rare) | ||
| Bronimir | - | Polish (Rare) | ||
| BronisŁAw | braw-NEE-swahf | Polish | ||
| BronisŁAwa | braw-nee-SWAH-vah | Polish | ||
| Bruno | BROO-no (German), BRUW-naw (Polish) | German, Italian, Spanish, Portuguese, French, Croatian, Polish, Ancient Germanic | ||
| Brygida | bri-GEE-dah | Polish | ||
| Cecylia | tse-TSIL-yah | Polish | ||
| Celestyn | tse-LES-tin | Polish | ||
| Celestyna | tse-les-TIN-ah | Polish | ||
| Celina | tse-LEE-nah | Polish | ||
| Cezary | tse-ZAH-ri | Polish | ||
| Cibor | CHEE-bawr | Polish | ||
| Cyryl | TSI-ril | Polish | ||
| Czcibor | - | Polish | ||
| CzesŁAw | CHES-wahf | Polish |