| Name | Gender | Pronounced | Usage | Popularity |
|---|---|---|---|---|
| Costin | - | Romanian | ||
| Crescens | - | Late Roman, Biblical Latin | ||
| Crescentia | - | German, Late Roman | ||
| Crescentius | - | Late Roman | ||
| Crina | KREE-nah | Romanian | ||
| Crispinus | - | Ancient Roman | ||
| Crispus | - | Ancient Roman | ||
| Cristi | - | Romanian | ||
| Cristian | - | Romanian | ||
| Cristina | kree-STEE-nah (Italian, Spanish) | Italian, Spanish, Portuguese, Romanian | ||
| Cupid | KYOO-pəd (English) | Roman Mythology | ||
| Cyprianus | - | Ancient Roman | ||
| Cyriaca | - | Late Roman | ||
| Cyriacus | - | Late Roman | ||
| DĂNuȚ | də-NOOTS | Romanian |