| Name | Meaning | Gender | Origin |
|---|
| Calamity | | Male | Hebrew |
| Calcifer | | Unisex | Hebrew |
| Cali | Most beautiful
| Female | English |
| Callie | Lark
| Female | Greek |
| Calvert | Shepherd | Unisex | |
| Calvin | Bald | Male | Latin |
| Calvin Ford | | Unisex | Hebrew |
| Calypso | Greek for concealor. A type of music originating in the West Indies. Also a satellite of Saturn. | Male | Greek |
| Camcorder | | Unisex | |
| Cameo | A carved gem portrait.
| Female | Word |
| Cameron Skye | | Unisex | Hebrew |
| Cami | Young Ceremonial Attendant | Unisex | English |
| Candy | Confectionery made with sugar. | Female | English |
| Capone | | Male | Hebrew |
| Cappy | | Unisex | Hebrew |
| Captain | One who commands or leads others. Officer in command of ship, aircraft, police or fire station. | Male | |
| Caramel | A smooth chewy candy | Unisex | |
| Carbon | Soft, black material. Carbon copying paper. | Unisex | |
| Carmel | From the vinyard
| Female | Hebrew |
| Carmen | garden, field of fruit, song. One who has a beautiful voice. | Female | Spanish |
| Cashew | A kidney shaped nut. | Unisex | |
| Cashmere | | Female | Hebrew |
| Casper | Master of the treasure | Male | Dutch |
| Cassidy | Clever: Curly-headed.
| Female | Irish |
| Cassieopeia | | Unisex | Hebrew |