| Name | Meaning | Gender | Origin |
|---|
| Cookie | A small flat, crisp cake | Unisex | English |
| Cougar | A large powerful American mountain cat | Unisex | English |
| Crackers | | Unisex | Hebrew |
| Cricket | A leaping insect | Unisex | English |
| Cristal | Crystal | Female | English |
| Critter | | Unisex | Hebrew |
| Crunch | | Unisex | Hebrew |
| Cujo | | Unisex | Hebrew |
| Cupid | Desire | Unisex | Latin |
| Curly | Having curls or wavy hair. | Unisex | English |
| Cyclone | A violent rotating windstorm. | Unisex | English |
| Daisy | Day's eye | Female | English |
| Dakota | The allies | Female | Native American |
| Dane | Honorable | Male | English |
| Danger | | Unisex | Hebrew |
| Dante | Enduring, obstinate | Male | Latin |
| Dawson | David's son | Male | English |
| Delta | Fourth letter of the alphabet | Female | Greek |
| Denali | The great one | Female | Native American |
| Diablo | The Devil | Unisex | English |
| Diana | Divine | Female | Latin |
| Diesel | | Unisex | Hebrew |
| Digby | Dyke farm, dyke settlement | Male | English |
| Digger | One that digs. | Unisex | English |
| Dima | Torrential rain | Male | Arabic |
| Dino | From The Dene | Male | Italian |
| Dixie | Strong power | Male | English |
| Dozer | One who sleeps lightly | Unisex | English |
| Drake | Snake, dragon | Male | English |
| Duchess | From the AristoCats | Unisex | English |