| Name | Meaning | Gender | Origin |
|---|
| Bubba | | Unisex | Hebrew |
| Bullet | A metal cylinder shot from a rifle or gun. Used to express speed. | Unisex | English |
| Buster | One that breaks up something | Unisex | American English |
| Butch | Masculine in appearance or manner. | Unisex | American English |
| Buttons | | Unisex | Hebrew |
| Cairo | Victorious one | Unisex | Arabic |
| Capone | | Unisex | Hebrew |
| Captain | A captain | Unisex | English |
| Cash | Cash | Unisex | English |
| Chaos | Gaping void | Unisex | Greek |
| Charley | Free man | Unisex | German |
| Charlie | Free man | Unisex | Germanic |
| Checkers | | Unisex | Hebrew |
| Cherokee | People Of A Different Speech. One Of The Largest American Indian Tribes. | Unisex | English |
| Chief | One in highest rank or authority. | Unisex | English |
| Chubbs | Rounded and plump. | Unisex | English |
| Chum | | Unisex | Hebrew |
| Chunky | Short, thick and stocky. Also means containing small pieces like chunky soup or stew. | Unisex | English |
| Coco | A Pet Name. | Unisex | French |
| Coda | Passage at the end of a composition that brings it to a close. | Unisex | English |
| Comet | A celestial body | Unisex | English |
| Cookie | A small flat, crisp cake | Unisex | English |
| Cougar | A large powerful American mountain cat | Unisex | English |
| Crackers | | Unisex | Hebrew |
| Cricket | A leaping insect | Unisex | English |
| Critter | | Unisex | Hebrew |
| Crunch | | Unisex | Hebrew |
| Cujo | | Unisex | Hebrew |
| Cupid | Desire | Unisex | Latin |
| Curly | Having curls or wavy hair. | Unisex | English |