| Name | Meaning | Gender | Origin |
|---|
| Boa | | Unisex | Hebrew |
| Bobbin | | Unisex | Hebrew |
| Bodacious | Remarkable, prodigious and bold. | Unisex | |
| Bogart | strong as a bow | Male | Gaelic |
| Bojangles | | Male | Hebrew |
| Bolero | | Unisex | Hebrew |
| Bolivar | Also Known As Long Leggedy Beasty | Male | Basque |
| Bomber | One who sets off bombs | Unisex | |
| Bongo | Connected drums played by beating with hands. | Unisex | |
| Bonsai | The art of growing dwarfed ornamental trees and shrubs. | Unisex | |
| Bonzai | | Unisex | Hebrew |
| Boo | | Male | Hebrew |
| Boo | | Male | Hebrew |
| Boo | | Male | Hebrew |
| Boo | | Male | Hebrew |
| Booger | | Unisex | Hebrew |
| Boone | a blessing | Male | English |
| Boris | A fighter, battler | Male | Slavic |
| Boss | An employer or supervisor | Unisex | |
| Bossman | | Unisex | Hebrew |
| Bouncer | One who bounds up and down | Unisex | |
| Boxer | | Unisex | Hebrew |
| Brady | large-chested | Male | Irish |
| Bramble | | Unisex | Hebrew |
| Brando | firebrand, sword | Male | Italian |