| Bethuel | | bə-THYOO-əl (English) | Biblical | |
| Beti | | - | Macedonian | |
| Betje | | BET-yə | Dutch, Limburgish | |
| Beulah | | BYOO-lə (English) | Biblical, Biblical Hebrew, English | |
| BhÀTair | | - | Scottish | |
| Bhaltair | | - | Scottish | |
| Bieito | | bee-AY-taw | Galician | |
| Biel | | - | Catalan | |
| Bilal | | - | Arabic, Urdu | |
| Bilhah | | BIL-hə (English) | Biblical | |
| Biljana | | - | Serbian, Macedonian, Croatian | |
| Binyamin | | bee-nyah-MEEN (Jewish) | Hebrew, Arabic, Biblical Hebrew | |
| Bion | | - | Ancient Greek | |
| Birgir | | - | Ancient Scandinavian, Icelandic | |
| Birgitta | | bir-YIT-tah (Swedish), bir-GIT-tah (Swedish), BEER-geet-tah (Finnish) | Swedish, Norwegian, Danish, Icelandic, Finnish | |