| Name | Meaning | Gender | Origin |
|---|
| Caliban | black | Male | Romanian |
| Calpurnia | | Unisex | Hebrew |
| Camillo | Young Ceremonial Attendant | Unisex | Italian |
| Cassius | hollow | Male | Latin |
| Cato | all-knowing | Male | Latin |
| Charles | manly, strong | Male | |
| Christopher | Christ-bearer | Male | Greek |
| Cicero | chickpea | Male | Latin |
| Clarence | bright | Male | Latin |
| Claudius | lame | Male | Latin |
| Cobweb | | Unisex | Hebrew |
| Cornelius | horn | Male | Latin |
| Cromwell | Lives By The Winding Stream | Unisex | English |
| Cupid | desire | Male | Latin |
| Curtis | courteous, polite | Male | |
| Cymbeline | Shakespearean play, rhymes with thin - and - lean | Male | Celtic |
| Demetrius | lover of the earth, given to the Earth goddess | Male | Greek |
| Dennis | Named for Saint Denys
| Male | |
| Derby | From Darby - Freeman. Various annual horse races. Also hat with a narrow brim and round crown. | Male | English |
| Dick | Powerful, Brave Ruler | Male | English |
| Diomedes | Cunning as Zeus | Unisex | Greek |
| Dion | Short for Dionysus | Male | Greek |
| Donalbain | | Unisex | Hebrew |
| Duncan | Dark complexioned warrior. | Male | Scottish |
| Edgar | Fortunate and powerful.
| Male | |