| Name | Meaning | Gender | Origin |
|---|
| Captain | One who commands or leads others. Officer in command of ship, aircraft, police or fire station. | Male | |
| Caradoc Dearborn | | Unisex | |
| Cardew | From the black fort
| Male | |
| Carlton | Free men's town.
| Male | |
| Carmen | garden, field of fruit, song. One who has a beautiful voice. | Female | Spanish |
| Cary | honest one, shy | Male | Latin |
| Casey | brave, watchful | Male | Irish |
| Cassidy | Clever: Curly-headed.
| Female | Irish |
| Cassie | Abbreviation of Cassandra. Unheeded prophetess. In Homer's The Iliad Cassandra's prediction of the fall of Troy was unheeded.
| Female | English |
| Catastrophe | | Male | Hebrew |
| Char | Beloved | Unisex | Celtic |
| Charity | Affection, Charity, Brotherly Love | Female | Latin |
| Chip | Fried slice of potato. Small piece of candy e.g. chocolate chip. | Male | |
| Chocolate Chip | Sweet
| Male | |
| Chrissy | Abbreviation of Christine. Follower of Christ.
| Female | |
| Chuck | a man: variant of Carl.
| Male | English |
| Chuckie | Man | Male | English |
| Ciara | black-haired | Female | Irish |
| Cici | Blind | Unisex | English |
| Cinamon | | Male | |
| Cinnamon | | Female | Hebrew |
| Claudine | Feminine of Claude.
| Female | |
| Cloe | Variant of Chloe.
| Female | |
| Clotilda | Heroine
| Female | |
| Club Flush | | Unisex | |