| Name | Meaning | Gender | Origin |
|---|
| 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 |
| Buzz | To move quickly and busily, to bustle | Male | English |
| Caesar | Long Hair | Male | Latin |
| Cain | A spear | Male | Hebrew |
| Capone | | Unisex | Hebrew |
| Captain | A captain | Unisex | English |
| Carlo | Free man | Male | German |
| Cash | Cash | Unisex | English |
| Castor | Beaver | Unisex | Greek |
| Ceasar | Hairy Child, Long Haired | Male | Latin |
| Chance | Good fortune | Male | English |
| Chaos | Gaping void | Unisex | Greek |
| Charlie | Free man | Unisex | Germanic |
| Chase | Huntsman | Male | English |
| Chavez | Keys | Male | Portuguese |
| Chaz | Free man | Male | German |
| Chevy | Knight | Unisex | French |
| Chico | Boy | Male | Spanish |
| Chief | One in highest rank or authority. | Unisex | English |
| Chino | A coarse twilled cotton, tan coloured material | Unisex | English |
| Chopper | Slang for helicopter. One who chops or cuts. | Unisex | English |
| Clarence | Of Clare | Male | English |
| Clint | Settlement on the river Glyme | Male | English |
| Combat | | Unisex | Hebrew |
| Comet | A celestial body | Unisex | English |