| Name | Meaning | Gender | Origin |
|---|
| Buster | One that breaks up something | Male | Modern |
| Butch | Masculine in appearance or manner. | Male | Nickname |
| Buttons | | Male | Hebrew |
| Buzz | To move quickly and busily, to bustle | Male | Modern |
| Buzzy | | Unisex | Hebrew |
| Cactus | Cactus | Unisex | English |
| Caesar | Title for Roman Emperors | Male | Latin |
| Calvin | Bald | Male | Latin |
| Calypso | Greek for concealor. A type of music originating in the West Indies. Also a satellite of Saturn. | Male | Greek |
| Cameron | Clan name meaning Bent nose.
| Male | Scottish |
| Caper | | Unisex | Hebrew |
| Captain | One who commands or leads others. Officer in command of ship, aircraft, police or fire station. | Male | |
| Carlyle | Carl's island | Unisex | |
| Carob | | Unisex | Hebrew |
| Casey | brave, watchful | Male | Irish |
| Cash | hollow | Male | Word |
| Castor | pious one | Male | Greek |
| Cato | all-knowing | Male | Latin |
| Catty | | Unisex | Hebrew |
| Ceasar | Hairy Child, Long Haired | Unisex | Latin |
| Cellophane | | Unisex | Hebrew |
| Chance | French for luck | Male | |
| Chandler | candle maker | Male | |
| Chaos | Kay-oss | Male | |
| Charlie | a man: variant of Carl.
| Male | English |