| Name | Meaning | Gender | Origin |
|---|
| Bert | English, noble, bright | Male | English |
| Bertie | Brilliant, Illuminated Fame | Male | English |
| Bertram | bright | Male | |
| Betsy | Consecrated To God | Female | English |
| Beverly | meadow of beavers | Female | English |
| Bianca | white | Female | Italian |
| Bibi | lady of the house | Female | |
| Billie | Determination: strength. A nickname for William.
| Female | English |
| Billy | resolute protection | Male | English |
| Bina | a musical instrument, intelligence | Female | Hebrew |
| Bird | Bird | Male | English |
| Bishop | a bishop | Male | English |
| Blaine | thin, lean, source of a river | Male | Irish |
| Blaire | Field Of Battle. | Unisex | Scottish |
| Blake | fair-haired, pallid | Male | English |
| Blanche | white | Female | |
| Blessing | Consecrated | Unisex | English |
| Blossom | lovely, A flower or cluster of flowers | Female | English |
| Bo | Nickname made popular by actress Bo Derek.
| Male | Norse |
| Boaz | swiftness | Male | Hebrew |
| Bodhi | awakening, enlightenment | Male | Sanskrit |
| Bong | | Unisex | Hebrew |
| Bonnie | sweet and good | Female | Scottish |
| Boone | a blessing | Male | English |
| Boston | | Male | Hebrew |