| Bara | | - | Croatian | |
| Barbara | | BAHR-bər-ə (English), BAHR-brə (English), BAHR-bah-rah (German), bahr-BAH-rah (Polish) | English, Italian, French, German, Polish, Hungarian, Slovene, Croatian, Swedish, Danish, Norwegian, | |
| Barica | | - | Croatian | |
| Bartol | | - | Croatian (Rare) | |
| Bartolomej | | - | Slovak, Croatian (Rare) | |
| Berislav | | - | Croatian, Medieval Slavic | |
| Bernard | | bər-NAHRD (English), BUR-nərd (English), ber-NAHR (French), BER-nahrt (Polish, Croatian) | English, French, Dutch, Polish, Croatian, Slovene, Czech, Ancient Germanic | |
| Bernarda | | - | Slovene, Croatian, Spanish | |
| Biljana | | - | Serbian, Macedonian, Croatian | |
| Biserka | | - | Croatian, Serbian | |
| BlaŽ | | - | Slovene, Croatian | |
| BlaŽEnka | | - | Croatian | |
| Blago | | - | Croatian | |
| Blagoje | | - | Serbian, Croatian | |
| Blanka | | BLAHN-kah (Czech, Slovak, Polish, Croatian), BLAWN-kaw (Hungarian) | Czech, Slovak, Polish, Hungarian, Croatian | |