| BĚLa | | - | Czech | |
| BÁRa | | - | Czech | |
| Barbora | | - | Czech, Slovak, Lithuanian | |
| BartolomĚJ | | - | Czech | |
| BeÁTa | | - | Hungarian, Czech, Slovak | |
| BedŘIch | | - | Czech | |
| Benedikt | | BE-ne-dikt (German), bye-nye-DEEKT (Russian), bee-nee-DEEKT (Russian) | German, Russian, Icelandic, Czech | |
| BenjamÍN | | ben-khah-MEEN (Spanish) | Spanish, Czech, Slovak, Icelandic | |
| Bernard | | bər-NAHRD (English), BUR-nərd (English), ber-NAHR (French), BER-nahrt (Polish, Croatian) | English, French, Dutch, Polish, Croatian, Slovene, Czech, Ancient Germanic | |
| Berta | | BER-tah (Polish, German, Italian) | Polish, Czech, Hungarian, German, Spanish, Catalan, Italian, Slovene | |
| BlaŽEj | | - | Czech, Slovak | |
| Blanka | | BLAHN-kah (Czech, Slovak, Polish, Croatian), BLAWN-kaw (Hungarian) | Czech, Slovak, Polish, Hungarian, Croatian | |
| BoŘIvoj | | - | Czech | |
| BoŽEna | | - | Czech, Slovak, Slovene, Croatian, Serbian | |
| Bohdan | | boh-DAHN (Ukrainian) | Czech, Ukrainian | |