| Name | Gender | Pronounced | Usage | Popularity |
|---|---|---|---|---|
| Cornelius | kər-NEE-lee-əs (English), kawr-NAY-lee-us (Dutch), kawr-NE-lee-uws (German) | Ancient Roman, English, Dutch, German, Biblical | ||
| Corona | - | Late Roman, Italian, Spanish | ||
| Corradino | kor-rah-DEE-no | Italian | ||
| Corrado | kor-RAH-do | Italian | ||
| CorraidhÍN | - | Ancient Irish | ||
| Corynn | - | English (Rare) | ||
| Cosette | - | French, Literature | ||
| Cosima | - | Italian | ||
| Cosimo | KAW-zee-maw, KO-zi-mo | Italian | ||
| Cosma | - | Italian | ||
| Cosmas | - | Ancient Greek (Latinized) | ||
| Cosmin | - | Romanian | ||
| Cosmina | - | Romanian | ||
| Costache | kos-TAH-ke | Romanian | ||
| Costantino | - | Italian |