| Name | Meaning | Gender | Origin |
|---|
| Cubby | | Unisex | Hebrew |
| Cujo | | Unisex | Hebrew |
| 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 |
| Dandy | An elegant man. | Unisex | English |
| Diamond | Precious gemstone | Unisex | English |
| Diesel | | Unisex | Hebrew |
| Digger | One that digs. | Unisex | English |
| Dinky | Dog on National Lampoon's Vacation | Unisex | English |
| Doc | Short for doctor | Unisex | English |
| Dodger | One that dodges or evades | Unisex | English |
| Domino | Small, rectangular black and white blocks used in the game of dominos. | Unisex | English |
| Doodles | | Unisex | Hebrew |
| Dottie | Gift of god | Unisex | Greek |
| Dozer | One who sleeps lightly | Unisex | English |
| Duchess | From the AristoCats | Unisex | English |
| Dude | | Unisex | Hebrew |
| Duffy | Son of Dubhthach or DubhshÃth | Unisex | Gaelic |
| Dusty | Thor's stone | Unisex | Norse |
| Dutchess | | Unisex | Hebrew |
| Einstein | | Unisex | Hebrew |
| Elwood | Elder tree + Wood | Unisex | English |
| Fido | Stereotypical name for a dog, from the Latin word for "faithful". | Unisex | English |
| Figaro | | Unisex | Hebrew |
| Flakey | | Unisex | Hebrew |
| Flash | To move rapidly. | Unisex | English |
| Flopsy | | Unisex | Hebrew |
| Foxy | Resembling a fox. Slang for sexy | Unisex | English |
| Franky | From France | Unisex | Latin |