| Name | Meaning | Gender | Origin |
|---|
| Crookshanks | | Unisex | Hebrew |
| Crookshanks | Hermione's cat in the Harry Potter books | Unisex | |
| Cruiser | | Unisex | Hebrew |
| Crystal | Variant of Christiana. Follower of Christ.
| Female | |
| Crystal | Variant of Christiana. Follower of Christ.
| Female | |
| D. Claude Cat | | Unisex | Hebrew |
| Daisy | Day's eye. A flower name.
| Female | |
| Daisy | Day's eye. A flower name.
| Female | |
| Damian | Tame
| Male | Greek |
| Dancer | | Male | Hebrew |
| Dandelion | A yellow rosette shaped flower. | Unisex | |
| Danny | God Is My Judge | Unisex | English |
| Dante | lasting | Male | Latin |
| Daphne | laurel, bay tree, victory | Female | Greek |
| Darren | great, rocky hill | Male | Irish |
| Darth Vader | | Male | Hebrew |
| Dash | To move with haste, to rush. Punctuation. Long sound in Morse code. | Male | English |
| Dashiell | Page Boy | Male | French |
| Deanna | divine | Female | English |
| Della | German, noble | Female | English |
| Delphi | Delphia, Greece | Female | Greek |
| Desdemona | ill-fated one, misery | Female | Greek |
| Dewey | Diminutive of Dafydd, Welsh variation of David | Male | Anglicized |
| Dexter | dyer, right-handed | Male | Latin |
| Diamond | In The Rough | Female | |