| Name | Meaning | Gender | Origin |
|---|
| Comet | A celestial body | Unisex | English |
| Conan | Little wolf hound | Male | Gaelic |
| Cookie | A small flat, crisp cake | Unisex | English |
| Cooper | Barrel maker | Male | English |
| Cosmo | Order | Male | Greek |
| Cuddles | To nestle or snuggle. | Unisex | English |
| Cupcake | Small cake baked in a cup shaped container | Unisex | English |
| Curly | Having curls or wavy hair. | Unisex | English |
| Cutie | A cute character. | Unisex | English |
| Dale | Dweller in the valley | Male | English |
| Damian | To tame | Male | Greek |
| Dante | Enduring, obstinate | Male | Latin |
| Darius | Maintain well | Male | Persian |
| Dash | From Chiel | Male | French |
| Dasher | | Unisex | Hebrew |
| Deigo | | Unisex | Hebrew |
| Dermot | Without enemies | Male | Gaelic |
| Dexter | Dyer of cloth | Male | English |
| Diamond | Precious gemstone | Unisex | English |
| Dick | Strong power | Male | English |
| Diesel | | Unisex | Hebrew |
| Digby | Dyke farm, dyke settlement | Male | English |
| Digger | One that digs. | Unisex | English |
| Dinky | Dog on National Lampoon's Vacation | Unisex | English |
| Dixie | Strong power | Male | English |
| Dj | | Unisex | Hebrew |
| Dodger | One that dodges or evades | Unisex | English |
| Dominic | Lord | Male | Latin |
| Doobie | | Unisex | Hebrew |
| Doug | Black water | Male | Gaelic |