| Name | Gender | Pronounced | Usage | Popularity |
|---|---|---|---|---|
| CunÉGonde | - | French | ||
| Cunigund | - | Ancient Germanic | ||
| Cunobelinus | kyoo-no-bə-LIEN-əs (English) | Ancient Celtic | ||
| Curt | KURT | English | ||
| Curtis | KUR-tis | English | ||
| Cuthbert | KUTH-burt | English (Rare) | ||
| Cvetka | - | Slovene | ||
| Cvetko | - | Slovene | ||
| Cy | SIE | English | ||
| Cyan | SIE-an | English (Rare) | ||
| Cybele | SIB-ə-lee (English) | Near Eastern Mythology (Hellenized) | ||
| Cybill | SIB-əl | English (Rare) | ||
| Cydney | SID-nee | English (Modern) | ||
| Cymone | see-MON | English (Rare) | ||
| Cynbel | - | Ancient Celtic |