| CĂTĂLin | | - | Romanian | |
| CĂTĂLina | | - | Romanian | |
| Camelia | | kah-MEL-yah | Romanian | |
| Carmen | | KAHR-men (Spanish), KAHR-mən (English) | Spanish, English, Italian, Romanian | |
| Carol (2) | | - | Romanian | |
| Catina | | - | Romanian | |
| Cezar | | - | Romanian, Portuguese (Brazilian) | |
| Ciprian | | cheep-RYAHN | Romanian | |
| Clara | | KLAH-rah (Italian, German, Spanish), KLER-ə (English), KLAR-ə (English) | Italian, German, Spanish, Portuguese, Catalan, Romanian, English, Swedish, Danish, Late Roman | |
| Claudia | | KLAW-dee-ə (English), KLOW-dee-ah (German, Dutch), KLOW-dyah (Italian, Spanish, Romanian) | English, German, Dutch, Italian, Spanish, Romanian, Biblical, Ancient Roman | |
| Claudiu | | - | Romanian | |
| ConstanȚA | | - | Romanian | |
| Constantin | | kon-stahn-TEEN (Romanian), kawn-stawn-TEN (French) | Romanian, French | |
| Corina | | - | English, German, Romanian | |
| Cornel | | - | Romanian | |