| Name | Gender | Meaning | Favorites |
| Caelan | Girl | Victorious people | |
| Caitir | Girl | Pure | |
| Caitlin | Girl | The Celtic form of Catherine | |
| Caitlyn | Girl | Pure | |
| Catriona | Girl | Pure | |
| Ceana | Girl | God is gracious | |
| Chaela | Girl | Like god | |
| Chaeli | Girl | Like god | |
| Ciara | Girl | Black, Mysterious | |
| Colleen | Girl | Irish girl | |