| Name | Meaning | Gender | Origin |
|---|
| Cupcake | Small cake baked in a cup shaped container | Unisex | English |
| Cutie | A cute character. | Unisex | English |
| Cybil | Female prophet | Female | Greek |
| Cyclops | One eyed monster | Unisex | English |
| Da | | Unisex | Hebrew |
| Dahlia | Dweller in the valley | Female | English |
| Daisy | Day's eye | Female | English |
| Dakota | The allies | Female | Native American |
| Dandelion | A yellow rosette shaped flower. | Unisex | English |
| Dandy | An elegant man. | Unisex | English |
| Danica | Morning star | Female | Slavonic |
| Darby | Deer settlement | Female | Norse |
| Darcy | From Arcy | Female | English |
| Dawn | Sunrise, daybreak | Female | English |
| Della | Noble | Female | Germanic |
| Delta | Fourth letter of the alphabet | Female | Greek |
| Dementia | | Unisex | Hebrew |
| Demeter | Earth mother | Female | Greek |
| Demi | Earth mother | Female | Greek |
| Desirae | Desired | Female | Latin |
| Devon | Men of Devon | Female | English |
| Devyn | Descendant of Damhán | Female | Gaelic |
| Diesel | | Unisex | Hebrew |
| Digger | One that digs. | Unisex | English |
| Dinky | Dog on National Lampoon's Vacation | Unisex | English |
| Doc | Short for doctor | Unisex | English |
| Dog | Domesticated carnivorous mammal. Dogs exhibit enormous genetic variety with over 2 different breed types. Man's best friend. | Unisex | English |
| Dolly | Gift of god | Female | Greek |
| Domino | Small, rectangular black and white blocks used in the game of dominos. | Unisex | English |
| Donatella | Given [by God] | Female | Latin |