| Name | Gender | Pronounced | Usage | Popularity |
|---|---|---|---|---|
| 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 | ||
| Cyndi | SIN-dee | English | ||
| Cynthia | SIN-thee-ə (English) | English, Greek Mythology (Latinized) | ||
| Cynwrig | - | Ancient Celtic | ||
| Cyprianus | - | Ancient Roman | ||
| Cyrielle | - | French | ||
| Cyril | SIR-əl (English), SEER-əl (English), TSI-ril (Czech) | English, French, Czech, Slovak |