| Name | Gender | Pronounced | Usage | Popularity |
|---|---|---|---|---|
| Clayton | KLAY-tən | English | ||
| Clem | KLEM | English | ||
| Clematis | klə-MAT-is | English (Rare) | ||
| Clemence | KLEM-ənts | English | ||
| Clemency | KLEM-ənt-see | English (Rare) | ||
| Clement | KLE-mənt | English | ||
| Cleo | KLEE-o | English | ||
| Cletis | KLEE-tis | English (Rare) | ||
| Cletus | KLEE-təs | English | ||
| Cleve | KLEEV | English | ||
| Cleveland | KLEEV-lənd | English | ||
| Cliff | KLIF | English | ||
| Clifford | KLIF-ərd | English | ||
| Clifton | KLIF-tən | English | ||
| Clint | KLINT | English |