| Brighton | Troops Or Brigade. | Male |
| Caleigh | Pure | Female |
| Callie | Lark | Female |
| Candra | Of The Moon | Female |
| Cassandra | Myth Name (A Prophetess No One Believed) | Female |
| Ceallach | Warrior | Male |
| Chan | Nickname For John. | Male |
| Chandler | Maker Of Candles | Male |
| Chandra | Dignified; Eminent; Illustrious; Of The Moon. CHANGLA | Female |
| Chephzibah | She Is Our Delight | Female |
| Chiara | Dark. Feminine Of Ciaran. | Female |
| Ciara | Saint Or Dark. Feminine Of Ciaran. | Female |
| Cillian | Battle | Male |
| Cindy | Abbreviation Of Cynthia And Lucinda. | Female |
| Clair | Bright | Female |
| Claire | Clear. Bright | Female |
| Clara | Bright | Female |
| Clare | Bright | Female |
| Clarette | Clear | Female |
| Claribel | Bright | Female |
| Clarimond | Brilliant Protectress | Female |
| Clarinda | Beautiful | Female |
| Clarissa | Clear | Female |
| Clarisse | Bright: Shining And Gentle: Famous. | Female |
| Clytie | Myth Name (A Water Nymph) | Female |