| Name | Meaning | Gender | Origin |
|---|
| Boa | | Female | Hebrew |
| Bolt | | Unisex | Hebrew |
| Bonnie | Pretty | Female | English |
| Boomer | A large full grown kangaroo. A baby boomer. | Unisex | English |
| Boston | Botolph's town | Unisex | English |
| Bowser | | Unisex | Hebrew |
| Bridget | The exalted one | Female | Gaelic |
| Brooklyn | Uncertain, perhaps broken land | Unisex | Dutch |
| Brownie | Moist chocolate cake with nuts | Unisex | English |
| Bruiser | A large heavyset man | Unisex | English |
| Bryn | Hill | Female | Welsh |
| Bubba | | Unisex | Hebrew |
| Bugsy | | Unisex | Hebrew |
| Bull | The adult male of certain large animals like cattle and elephants | Unisex | English |
| Bullet | A metal cylinder shot from a rifle or gun. Used to express speed. | Unisex | English |
| Bully | An overbearing person, a ruffian | Unisex | English |
| Busta | | Unisex | Hebrew |
| Buster | One that breaks up something | Unisex | American English |
| Butch | Masculine in appearance or manner. | Unisex | American English |
| Caden | Little Fighter. | Unisex | English |
| Capone | | Unisex | Hebrew |
| Captain | A captain | Unisex | English |
| Cash | Cash | Unisex | English |
| Castor | Beaver | Unisex | Greek |
| Cayenne | Red ground spice from several varieties of capsicum | Female | English |
| Chaos | Gaping void | Unisex | Greek |
| Charlie | Free man | Unisex | Germanic |
| Chevy | Knight | Unisex | French |
| Cheyenne | Speak incoherently | Female | American English |
| Chief | One in highest rank or authority. | Unisex | English |