| Name | Meaning | Gender | Origin |
|---|
| Blake | fair-haired, pallid | Male | English |
| Bo | Nickname made popular by actress Bo Derek.
| Male | Norse |
| Boaz | swiftness | Male | Hebrew |
| Bogart | strong as a bow | Male | Gaelic |
| Bonnie | sweet and good | Female | Scottish |
| Boris | A fighter, battler | Male | Slavic |
| Boston | | Male | Hebrew |
| Brady | large-chested | Male | Irish |
| Breanne | Strong | Unisex | Irish |
| Bree | broth | Female | Irish |
| Brian | strong | Male | Irish |
| Briana | She ascends. Feminine of Brian.
| Female | Feminine |
| Brianna | She ascends. Feminine of Brian.
| Female | Feminine |
| Brianne | She ascends. Feminine of Brian.
| Female | |
| Brick | Speckled | Male | Celtic |
| Brid | Protective
| Female | Irish |
| Bride | Protective
| Female | Irish |
| Bridger | lives near the bridge | Male | English |
| Bridget | Strength. Mythological Celtic goddess of fire and poetry.
| Female | Anglicized |
| Brigida | Spanish form of Bridget strong
| Female | |
| Brigidia | Spanish form of Bridget strong
| Female | |
| Brina | protector | Unisex | |
| Brit | Of Bretagne, France | Unisex | Irish |
| Brita | Of Bretagne, France | Unisex | English |
| Britta | strength, power | Female | Scandinavian |