| Name | Gender | Pronounced | Usage | Popularity |
|---|---|---|---|---|
| Conan | - | Irish | ||
| ConcepciÓN | kawn-thep-THYON (Spanish), kawn-sep-SYON (Latin American Spanish) | Spanish | ||
| Concepta | - | Irish | ||
| ConchÚR | - | Irish, Irish Mythology | ||
| Concha | KON-chah | Spanish | ||
| Conchita | kon-CHEE-tah | Spanish | ||
| Conchobhar | - | Irish, Irish Mythology | ||
| Condoleezza | kahn-də-LEE-zə | Various | ||
| Confucius | kən-FYOO-shəs (English) | History | ||
| Conlaoch | - | Irish Mythology | ||
| Conleth | - | Irish | ||
| Conley | - | Irish | ||
| Conn | - | Irish | ||
| Connell | KAHN-əl | English (Rare) | ||
| Conner | KAHN-ər | English (Modern) |