| Name | Meaning | Gender | Origin |
|---|
| Ciara | Dark | Female | Gaelic |
| Cierra | Saw | Female | English |
| Colby | Coalworker | Male | English |
| Coleman | Dove | Male | Gaelic |
| Colman | Dove | Male | English |
| Colt | Young male horse | Male | English |
| Colton | Coal town | Male | English |
| Condon | Dark Haired Wise Man | Male | English |
| Corby | Dark | Unisex | Latin |
| Dany | Feminine Variant Of Daniel God Will Judge. | Unisex | English |
| Daray | | Female | Hebrew |
| Darcie | From Arcy | Female | English |
| Darcy | From Arcy | Female | English |
| Dee | Abbreviation Of Names Beginning With The Letter D. | Female | English |
| Delano | From The Elder Tree Grove. | Male | French |
| Delia | Of Delos | Female | Latin |
| Demelza | Place in the parish of St. Columb | Female | Cornish |
| Devaki | Black | Female | Indian |
| Dewayne | Dark, black | Male | Gaelic |
| Dierdre | Sorrowful | Female | English |
| Dilys | Genuine | Female | Welsh |
| Dolan | Descendant of Dubhshlán | Male | Gaelic |
| Don | World rule | Male | Gaelic |
| Donald | World rule | Male | Gaelic |
| Donnell | World rule | Male | Gaelic |
| Donnelly | Descedant of Donnghal | Male | Gaelic |
| Donny | World rule | Male | Gaelic |
| Donovan | Dark chieftain | Male | Gaelic |
| Dooley | Dark Hero | Male | English |
| Dorian | Descendant Of Dorus. Dorian Was A Character In Oscar Wilde's Novel The Picture Of Dorian Gray Who Was Given His Wish That His Portrait Would Age While He Remained Young And Handsome. | Male | Literary |