| Name | Meaning | Gender | Origin |
|---|
| Apache | | Unisex | Hebrew |
| Aries | Battle strife | Unisex | Greek |
| Atlas | Not enduring | Unisex | Greek |
| Axle | | Unisex | Hebrew |
| Baby | Baby | Unisex | American English |
| Bacchus | To shout | Unisex | Greek |
| Badger | Burrowing mammal with white stripe on forehead. Also verb to pester or harass. | Unisex | English |
| Bandit | An outlaw or robber | Unisex | English |
| Bear | Large mammal with large head, bulky body and coarse thick fur | Unisex | English |
| Beast | | Unisex | Hebrew |
| Bismark | | Unisex | Hebrew |
| Blaze | Stuttering | Unisex | Latin |
| Blitz | | Unisex | Hebrew |
| Blue | Blue | Unisex | English |
| Bolt | | Unisex | Hebrew |
| Boomer | A large full grown kangaroo. A baby boomer. | Unisex | English |
| Boston | Botolph's town | Unisex | English |
| Bowser | | Unisex | Hebrew |
| Brooklyn | Uncertain, perhaps broken land | Unisex | Dutch |
| Brownie | Moist chocolate cake with nuts | Unisex | English |
| Bruiser | A large heavyset man | Unisex | English |
| 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 |
| Capone | | Unisex | Hebrew |