| Babajide | | - | Western African, Yoruba | |
| Babatunde | | - | Western African, Yoruba | |
| Bagus | | - | Indonesian | |
| Bai | | - | Chinese | |
| Balbina | | bahl-BEE-nah (Italian) | Spanish (Rare), Portuguese (Rare), Italian (Rare), Ancient Roman | |
| Balbino | | - | Spanish (Rare), Portuguese (Rare), Italian (Rare) | |
| BalduÍNo | | - | Portuguese | |
| Bambang | | BAHM-bahng | Indonesian, Javanese | |
| Bamidele | | - | Western African, Yoruba | |
| Bao | | - | Chinese | |
| Bartolomeu | | - | Portuguese, Galician | |
| Batari | | - | Indonesian | |
| 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 | |