| Name | Gender | Pronounced | Usage | Popularity |
|---|---|---|---|---|
| Corynn | - | English (Rare) | ||
| Cosme | - | Portuguese, French | ||
| Cosmo | KAWZ-mo | English | ||
| Coty | - | English (Modern) | ||
| Courtney | KORT-nee | English | ||
| Cowal | - | Irish | ||
| Coy | KOI | English | ||
| CrÍOstÓIr | - | Irish | ||
| Craig | KRAYG | Scottish, English | ||
| Crawford | KRAW-fərd | English | ||
| Cree | KREE | English (Rare) | ||
| Creighton | KRAY-tən | English (Rare) | ||
| Crescencia | - | Spanish | ||
| Crispian | - | English (Archaic) | ||
| Crispin | KRIS-pin | English (Rare) |