| BÁRbara | | - | Portuguese, Spanish | |
| Balbina | | bahl-BEE-nah (Italian) | Spanish (Rare), Portuguese (Rare), Italian (Rare), Ancient Roman | |
| Balbino | | - | Spanish (Rare), Portuguese (Rare), Italian (Rare) | |
| BalduÍNo | | - | Portuguese | |
| Bartolomeu | | - | Portuguese, Galician | |
| Beatriz | | be-ah-TREETH (Spanish), be-ah-TREES (Latin American Spanish), be-a-TREES (Portuguese), be-a-TREESH (Portuguese) | Spanish, Portuguese | |
| Belinha | | - | Portuguese | |
| Benedita | | - | Portuguese | |
| Benedito | | - | Portuguese | |
| Benigna | | - | Spanish, Italian, Portuguese, Late Roman | |
| Benigno | | - | Italian, Spanish, Portuguese | |
| Benjamim | | - | Portuguese | |
| Bento | | - | Portuguese | |
| Bernardino | | ber-nahr-DEE-no (Italian, Spanish) | Italian, Spanish, Portuguese | |
| Bernardo | | ber-NAHR-do (Italian, Spanish) | Italian, Spanish, Portuguese | |