| Drudwas | Legendary son of Tryffin. |
| Druson | Derived from a strong force. |
| Drych | Legendary son of Kibddar. |
| Drysi | A name meaning a thorny thicket. |
| Dryw | A name meaning a small wren bird. |
| Drywsone | A name meaning son of the wren. |
| Duach | Legendary son of Gwawrddur. |
| Dylan | Born From The Ocean; Son Of The Sea; Daughter of the waves; Man from the sea; From the name DILLON; The sea; Son of the sea |
| Dyllan | Born from waves |
| Dyllis | A name meaning sincere or genuine. |
| Dynawd | A name meaning a powerful protector. |
| Dyvynarth | Legendary son of Gwrgwst. |
| Dyvyr | Legendary son of Alun. |
| Dywel | Legendary son of Erbin. |
| Earwin | A name meaning a noble sea friend. |
| Ebrill | A name meaning the month of April. |
| Edmyg | A noble and powerful defender. |
| Eesha | Goddess Parvati/ purity |
| Efa | Welsh form of Eve, meaning life. |
| Eheubryd | Legendary daughter of KyvwIch. |
| Eiddoel | Legendary son of Ner. |
| Eifion | A Welsh name meaning river or stream. |
| Eiladar | Legendary son of Penn Llarcan. |
| Eiluned | From 'cilun' meaning idol. |
| Eilwen | Fair brow.;Variant of Eilwyn: White-browed. |
| Eilwyn | Derived from Welsh meaning fair brow. |
| Einian | A name meaning a just or pure person. |
| Einwys | Variant of Einion: Anvil. |
| Eira | Welsh name meaning snow. |
| Eirian | Welsh name meaning bright silver. |
| Eirlys | Welsh name meaning snowdrop. |
| Ekta | Represents unity and oneness |
| Ela | Cardamom tree; From ELLA; Earth; Earth, Gajra |
| Elain | Meaning a bright sun ray. |
| Elen | Welsh forrn of Helen. |
| Elined | From 'cilun' meaning idol. |
| Ellora | The name given to the cave temples of India. |
| Ellylw | Legendary daughter of Neol Hang Cock. |
| Elphin | Legendary son of Gwyddno. |
| Eluned | From 'cilun' meaning idol. |