| Name | Gender | Pronounced | Usage | Popularity |
|---|---|---|---|---|
| CSABA | CHAW-baw | Hungarian | ||
| CSENGE | CHENG-ge | Hungarian | ||
| CSILLA | CHEEL-law | Hungarian | ||
| CTIBOR | - | Czech | ||
| CTIRAD | - | Czech, Slovak | ||
| CUÁN | - | Irish | ||
| CUAUHTÉMOC | - | Native American, Nahuatl | ||
| CUIDIGHTHEACH | - | Ancient Irish | ||
| CUIMÍN | - | Irish | ||
| CULHWCH | KEEL-hookh (Welsh) | Welsh, Welsh Mythology | ||
| Cullen | ['kʌlən] | |||
| CULLEN | KUL-ən | English | ||
| Culver | ['kʌlvə] | |||
| CUMHUR | - | Turkish | ||
| Cummings | ['kʌmiŋz] |