| Cili | | - | Hungarian | |
| Cille | | - | Danish | |
| Cinderella | | sin-də-RE-lə (English) | Literature | |
| Cindra | | SIN-drə | English (Rare) | |
| Cinta | | - | Indonesian | |
| Cintia | | THEEN-tyah (Spanish), SEEN-tyah (Latin American Spanish) | Spanish, Hungarian | |
| Cinzia | | - | Italian | |
| Ciprian | | cheep-RYAHN | Romanian | |
| Cipriano | | chee-pree-AH-no (Italian) | Italian, Spanish, Portuguese | |
| CirÍAco | | - | Portuguese, Spanish | |
| Circe | | SUR-see (English) | Greek Mythology (Latinized) | |
| Ciriaco | | chee-ree-AH-ko (Italian), thee-ree-AH-ko (Spanish), see-ree-AH-ko (Latin American Spanish) | Italian, Spanish | |
| Cirillo | | chee-REEL-lo | Italian | |
| Cirino | | chee-REE-no (Italian), thee-REE-no (Spanish), see-REE-no (Latin American Spanish) | Italian, Spanish | |
| Ciro | | CHEE-ro (Italian), THEE-ro (Spanish), SEE-ro (Latin American Spanish) | Italian, Spanish | |