| Name | Gender | Pronounced | Usage | Popularity |
|---|---|---|---|---|
| CÉCile | se-SEEL (French) | French, Dutch | ||
| CÉLeste | se-LEST | French | ||
| CÉLestin | se-les-TEN | French | ||
| CÉLestine | - | French | ||
| CÉLine | se-LEEN | French | ||
| CÉSaire | - | French | ||
| CÉSar | THE-sahr (Spanish), SE-sahr (Latin American Spanish) | French, Spanish, Portuguese | ||
| CÔMe | - | French | ||
| Cadeyrn | - | Ancient Celtic | ||
| Caecilia | - | German, Ancient Roman | ||
| Caecilius | - | Ancient Roman | ||
| Caelia | - | Ancient Roman | ||
| Caelina | - | Ancient Roman | ||
| Caelinus | - | Ancient Roman | ||
| Caelius | - | Ancient Roman |