| Name | Meaning | Gender | Origin |
|---|
| Billie Jo | | Unisex | Hebrew |
| Billy | resolute protection | Male | English |
| Blaine | thin, lean, source of a river | Male | Irish |
| Blake | fair-haired, pallid | Male | English |
| Blaze | Lisp: stutter. Blaise Pascal was a brilliant seventeenth century child prodigy: mathematician: scientist and philosopher who invented the calculating machine and hydraulic press before dying at age thirty-nine.
| Male | Latin |
| Bo | Nickname made popular by actress Bo Derek.
| Male | Norse |
| Bob | bright, famous | Male | English |
| Bobbie | Latin, foreign woman | Female | English |
| Bobby | bright fame | Male | English |
| Boone | a blessing | Male | English |
| Brad | English, wide meadow | Male | English |
| Bradley | broad meadow | Male | English |
| Brady | large-chested | Male | Irish |
| Brandi | Brandy | Unisex | English |
| Braxton | Brock's settlement | Male | English |
| Brenda | fiery hill, sword-blade | Female | Celtic |
| Bret | Native of Brittany | Unisex | |
| Brett | a native of Brittany, Briton | Male | Celtic |
| Brian | strong | Male | Irish |
| Brice | swift, quick-moving, son of Rice | Male | Scottish |
| Bridger | lives near the bridge | Male | English |
| Bridget | Strength. Mythological Celtic goddess of fire and poetry.
| Female | Anglicized |
| Brittany | A Britain. | Female | English |
| Broderick | son of Roderick, from the broad ridge | Male | Norse |
| Brody | From the muddy place. Surname.
| Male | Irish |