| Name | Meaning | Gender | Origin |
|---|
| Casper | Master of the treasure | Male | Dutch |
| Caspian | from C.S. Lewis The Chronicles of Narnia | Male | Place |
| Caterina | Greek, pure | Female | Italian |
| Catherine | pure | Female | Greek |
| Cecilia | blind one | Female | Latin |
| Cedric | Battle leader
| Male | Celtic |
| Charles | manly, strong | Male | |
| Charlie | a man: variant of Carl.
| Male | English |
| Charlotte | petite and femininewoman, feminine of Charles | Female | |
| Chelsea | river landing place, port | Female | |
| Chloe | Fresh young blossom, Greek for blooming | Female | Greek |
| Christopher | Christ-bearer | Male | Greek |
| Claire | bright, clear | Female | |
| Clara | bright, clear | Female | Latin |
| Clarence | bright | Male | Latin |
| Clark | cleric, scholar | Male | English |
| Claudette | Feminine of Claude.
| Female | |
| Claudia | Feminine of Claude.
| Female | Latin |
| Clyde | Nature name | Male | Scottish |
| Colin | Strong and virile; victorious army; youth, child, victor | Male | English |
| Constance | steadfastness | Female | English |
| Cornelius | horn | Male | Latin |
| Cyrus | throne | Male | Persian |
| Damien | Calm, Tame | Unisex | French |
| Daniel | my judge is the Lord | Male | Hebrew |