| Name | Gender | Pronounced | Usage | Popularity |
|---|---|---|---|---|
| CloÉ | klo-E (French) | Portuguese, French | ||
| Clodovicus | - | Ancient Germanic (Latinized) | ||
| Cloelia | - | Ancient Roman | ||
| Cloelius | - | Ancient Roman | ||
| Clothilde | klo-TEELD | French | ||
| Clothildis | - | Ancient Germanic (Latinized) | ||
| Clotilda | klə-TIL-də | English | ||
| Clotilde | klo-TEELD (French) | French, Italian, Portuguese, Spanish | ||
| Clover | KLO-vər | English (Rare) | ||
| Clovis | KLO-vis (English), klo-VEES (French) | Ancient Germanic (Latinized), French | ||
| Clyde | KLIED | English | ||
| Cnaeus | - | Ancient Roman | ||
| Coby | KO-bee | English | ||
| Codie | KO-dee | English (Modern) | ||
| Cody | KO-dee | English, Irish |