| Name | Gender | Pronounced | Usage | Popularity |
|---|---|---|---|---|
| Concettina | kon-chet-TEE-nah | Italian | ||
| Concetto | kon-CHET-to | Italian | ||
| Concha | KON-chah | Spanish | ||
| Conchita | kon-CHEE-tah | Spanish | ||
| Concordia | kən-KAWR-dee-ə (English) | Roman Mythology | ||
| Condoleezza | kahn-də-LEE-zə | Various | ||
| Connell | KAHN-əl | English (Rare) | ||
| Conrad | KAHN-rad (English), KAWN-raht (German) | English, German, Ancient Germanic | ||
| Conrado | kon-RAH-dho | Spanish | ||
| Consolata | kon-so-LAH-tah | Italian | ||
| ConstanȚA | - | Romanian | ||
| Constans | - | Late Roman | ||
| Constant | kawn-STAWN (French), KAHN-stənt (English) | French, English (Rare) | ||
| Constantia | - | Late Roman | ||
| Constantin | kon-stahn-TEEN (Romanian), kawn-stawn-TEN (French) | Romanian, French |