| Name | Meaning | Gender | Origin |
|---|
| Butch | Masculine in appearance or manner. | Unisex | American English |
| Butter | | Unisex | Hebrew |
| Buttercup | A bright yellow flowered plant. Also a term of endearment. | Unisex | English |
| Butterscotch | | Unisex | Hebrew |
| Buttons | | Unisex | Hebrew |
| Cali | Most beautiful | Female | English |
| Callie | Most beautiful | Female | Greek |
| Cameo | Delicate,carved relief | Unisex | English |
| Camille | Altar server | Female | Latin |
| Candy | Honest | Female | Latin |
| Capone | | Unisex | Hebrew |
| Captain | A captain | Unisex | English |
| Carley | Free man | Female | German |
| Cash | Cash | Unisex | English |
| Cassie | She who entangles men | Female | Greek |
| Chanel | Channel, pipe | Female | French |
| Chaos | Gaping void | Unisex | Greek |
| Charisma | Charm, appeal | Female | English |
| Charlie | Free man | Unisex | Germanic |
| Checkers | | Unisex | Hebrew |
| Chelsea | Chalk landing place | Female | English |
| Cherokee | People Of A Different Speech. One Of The Largest American Indian Tribes. | Unisex | English |
| Chevy | Knight | Unisex | French |
| Chewie | | Unisex | Hebrew |
| Chewy | Needing chewing. | Unisex | English |
| Cheyenne | Speak incoherently | Female | American English |
| Chief | One in highest rank or authority. | Unisex | English |
| Chili | | Unisex | Hebrew |
| China | Qin's kingdom | Female | English |
| Chipper | Lively spirits, cheerful. Chip off the old block. | Unisex | English |