| Name | Gender | Pronounced | Usage | Popularity |
|---|---|---|---|---|
| Cleveland | ['kli:vlənd] | |||
| CLEVELAND | KLEEV-lənd | English | ||
| Cliff | [klif] | |||
| CLIFF | KLIF | English | ||
| Clifford | ['klifəd] | |||
| CLIFFORD | KLIF-ərd | English | ||
| Clifton | ['kliftən] | |||
| CLIFTON | KLIF-tən | English | ||
| CLIMACUS | - | Late Roman | ||
| CLIMENT | klee-MENT | Catalan | ||
| CLINT | KLINT | English | ||
| Clinton | ['klintən] | |||
| CLINTON | KLIN-tən | English | ||
| CLIO | KLEE-o (Italian) | Greek Mythology (Latinized), Italian | ||
| CLITUS | - | Ancient Greek (Latinized) |