| Name | Gender | Pronounced | Usage | Popularity |
|---|---|---|---|---|
| Christophorus | - | Late Roman | ||
| Chrysanthe | - | Ancient Greek | ||
| Chrysanthos | - | Greek, Ancient Greek | ||
| Chucho | CHOO-cho | Spanish | ||
| Chuks | - | Western African, Igbo | ||
| Chukwudi | - | Western African, Igbo | ||
| Chukwuemeka | - | Western African, Igbo | ||
| Chukwuma | - | Western African, Igbo | ||
| Chus | CHOOS | Spanish | ||
| Chuy | - | Spanish | ||
| CibrÁN | thee-BRAN | Galician | ||
| Cicero | SIS-ə-ro (English) | Ancient Roman | ||
| Cila | - | Slovene, Croatian | ||
| Cili | - | Hungarian | ||
| Cille | - | Danish |