| Name | Meaning | Gender | Origin |
|---|
| Casey | From Cayce | Male | American English |
| Cash | Cash | Unisex | English |
| Casper | Treasurer | Male | Persian |
| Cassidy | Curly | Male | Gaelic |
| Cassius | Empty | Male | Latin |
| Cecil | Blind | Male | Latin |
| Cesar | Long Haired | Male | English |
| Cha-cha | | Unisex | Hebrew |
| Chaos | Gaping void | Unisex | Greek |
| Charlie | Free man | Unisex | Germanic |
| Chase | Huntsman | Male | English |
| Cheerio | Brand of breakfast cereal | Unisex | English |
| Chester | Camp | Male | Latin |
| Chevy | Knight | Unisex | French |
| Chewy | Needing chewing. | Unisex | English |
| Chica | Pet Name Meaning Little Girl. | Unisex | English |
| Chicklet | | Unisex | Hebrew |
| Chico | Boy | Male | Spanish |
| Chief | One in highest rank or authority. | Unisex | English |
| Chili | | Unisex | Hebrew |
| Chip | Free man | Male | German |
| Chipper | Lively spirits, cheerful. Chip off the old block. | Unisex | English |
| Chocolate | Product of cocoa seeds used for drinks or candy | Unisex | English |
| Chong | | Unisex | Hebrew |
| Chubbs | Rounded and plump. | Unisex | English |
| Chubby | Rounded and plump | Unisex | English |
| Chunky | Short, thick and stocky. Also means containing small pieces like chunky soup or stew. | Unisex | English |
| Cinder | | Unisex | Hebrew |
| Clancy | Red | Male | Gaelic |
| Coco | A Pet Name. | Unisex | French |