| Name | Meaning | Gender | Origin |
|---|
| Connor | lover of hounds | Male | Irish |
| Cosmic | | Unisex | Hebrew |
| Cosmo | Order, universe.
| Male | Italian |
| Crookshanks | Hermione's cat in the Harry Potter books | Unisex | |
| Crookshanks | | Unisex | Hebrew |
| Cupcake | Small cake baked in a cup shaped container | Unisex | |
| Cupid | desire | Male | Latin |
| Custard | A dessert made from milk and eggs, creamy yellow in appearance. | Unisex | |
| Cyclops | one eyed monster | Male | |
| Dagda | | Unisex | Hebrew |
| Dane | from Denmark | Male | English |
| Dara | compassion, wisdom, angel of rains and rivers | Male | Irish |
| Denis | Mountain Of Zeus | Unisex | French |
| Derry | great lover, an ancient hero | Male | Irish |
| Dice | Small cubes with sides numbered 1 to 6 used in games. | Male | Word |
| Dickens | | Unisex | Hebrew |
| Dillon | Born Near The Sea | Male | Welsh |
| Dio | after Ronnie James Dio, singer in the heavy-metal rock band Black Sabbath | Unisex | |
| Disco | | Unisex | Hebrew |
| Dobby | Works at Hogwarts.
| Male | |
| Doodle | To draw when bored or abstracted. | Unisex | |
| Draco | Dragon | Male | Italian |
| Drake | A male duck. | Male | English |
| Drew | sturdy, vision | Male | English |
| Duke | Highest ranking nobleman | Male | English |