| Ciaran | | Male |
| Clara | Bright | Female |
| Claudia | Lame | Female |
| Claudio | Lame | Male |
| Clive | Lives At The Cliffs | Male |
| Coco | A Pet Name. | Female |
| Conan | Wise | Male |
| Consuela | Consolation | Female |
| Coral | From The Coral Of The Sea | Female |
| Coraline | From The Semi-Precious Sea Growth Coral | Female |
| Corazon | Heart | Female |
| Cory | Hill: Hollow. | Male |
| Costello | Surname. | Male |
| Cruz | Cross. | Male |
| Darcy | From Arcy | Female |
| Dakota | Friend: Ally. Tribal Name. | Male |
| Dalmar | Somali Name Meaning "Versatile." | Male |
| Damian | Tame | Male |
| Damita | Little Noble | Female |
| Damon | Loyal Friend DANAUS | Male |
| Darcia | Dark. | Female |
| Daria | Rich | Female |
| Darwishi | Saint | Male |
| Delphine | A Thirteenth-Century French Saint. | Female |
| Demetria | Myth Name (Goddess Of The Harvest) | Female |