| Caomh | | - | Ancient Irish | |
| CaomhÁN | | - | Ancient Irish | |
| Caprice | | - | English (Rare) | |
| Capricia | | - | English (Rare) | |
| Caprina | | - | Various | |
| Caramia | | - | Various | |
| Caratacos | | - | Ancient Celtic | |
| Caratacus | | - | Ancient Celtic (Latinized) | |
| Cardea | | - | Roman Mythology | |
| Careen | | kə-REEN | English (Rare) | |
| Caridad | | kah-ree-DHAHD | Spanish | |
| Carina (1) | | kə-REEN-ə (English), kah-REE-nah (German) | English, Portuguese, Spanish, German, Late Roman | |
| Carina (2) | | kah-REE-nah (German) | Swedish, Norwegian, Danish, German | |
| Caris | | KAHR-is | English (Rare) | |
| Carl | | KAHRL (German, English) | German, Swedish, Norwegian, Danish, English | |