| Name | Gender | Pronounced | Usage | Popularity |
|---|---|---|---|---|
| Cuthbert | KUTH-burt | English (Rare) | ||
| Cyan | SIE-an | English (Rare) | ||
| Cybill | SIB-əl | English (Rare) | ||
| Cymone | see-MON | English (Rare) | ||
| Cyrilla | - | English (Rare) | ||
| Dacre | - | English (Rare) | ||
| Daffodil | DAF-ə-dil | English (Rare) | ||
| Daley | DAY-lee | Irish, English (Rare) | ||
| Daly | DAY-lee | Irish, English (Rare) | ||
| Darcey | DAHR-see | English (Rare) | ||
| Darden | DAHR-dən | English (Rare) | ||
| Dashiell | - | English (Rare) | ||
| Davena | - | English (Rare) | ||
| Davida | - | English (Rare) | ||
| Davinia | - | English (Rare) |