| Balbina | | bahl-BEE-nah (Italian) | Spanish (Rare), Portuguese (Rare), Italian (Rare), Ancient Roman | |
| Balbino | | - | Spanish (Rare), Portuguese (Rare), Italian (Rare) | |
| Baldassare | | - | Italian | |
| Baldo | | - | Italian, Spanish, Ancient Germanic | |
| Baldovino | | - | Italian | |
| 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, | |
| Bartolo | | - | Italian | |
| Bartolomeo | | - | Italian | |
| Basilio | | bah-ZEE-lyo (Italian), bah-SEE-lyo (Spanish) | Italian, Spanish | |
| Battista | | baht-TEE-stah | Italian | |
| Beatrice | | be-ah-TREE-che (Italian), BEE-ə-tris (English), BEE-tris (English), BE-ah-trees (Swedish), be-ah-TREES (Swedish) | Italian, English, Swedish | |
| Benedetta | | - | Italian | |
| Benedetto | | - | Italian | |
| Beniamino | | - | Italian | |
| Benigna | | - | Spanish, Italian, Portuguese, Late Roman | |