| Conrad | Honest Advisor Brave: Wise. | Male |
| Coral | From The Coral Of The Sea | Female |
| Corazon | Heart | Female |
| Corey | Seething Pool | Male |
| Crystal | Sparkling | Female |
| Cullen | Cub | Male |
| Cyrus | Sun | Male |
| Damian | Tame | Male |
| Damien | Untamed | Female |
| Dane | From Denmark | Male |
| Daniel | God Is My Judge. The Biblical Prophet And Writer Of Book Of Daniel Was A Teenager When Taken To Babylon After The Destruction Of Jerusalem In 607 BC. He Survived Two Death Sentences: (A Lions' Den And A Fiery Furnace.): Frontiersman Daniel Boone. | Male |
| Danielle | God Is My Judge | Female |
| Daphne | Bay Tree | Female |
| David | Dearly Loved | Male |
| Davis | David's Son | Male |
| Dean | From The Dene | Male |
| Declan | The Name Of An Irish Saint. | Male |
| Desmond | From South Munster | Male |
| Devin | Poet | Male |
| Dexter | Name Taken From Heraldry | Male |
| Dion | Abbreviation Of Dionysius. | Male |
| Dominic | Belonging To The Lord. | Male |
| Dominick | "Variant Of Dominic, Belonging To The Lord" | Male |
| Donald | Great Chief. Donald Is A Major Scottish Clan Names. | Male |
| Donovan | Strong Fighter | Male |