| Name | Gender | Pronounced | Usage | Popularity |
|---|---|---|---|---|
| Conlaoch | - | Irish Mythology | ||
| Connla | - | Irish Mythology | ||
| Conor | KAHN-ər (English) | Irish, English, Irish Mythology | ||
| DÁIre | DAW-ra | Irish, Irish Mythology | ||
| Dagda | DAHG-dah | Irish Mythology | ||
| Daireann | - | Irish Mythology | ||
| Deirdre | DEER-drə (English), DEER-dree (English), DER-dre (Irish) | English, Irish, Irish Mythology | ||
| Derdriu | - | Irish Mythology | ||
| Diarmaid | DEER-mid | Irish, Irish Mythology | ||
| Diarmait | - | Irish, Irish Mythology | ||
| Diarmuid | - | Irish, Irish Mythology | ||
| Doireann | - | Irish, Irish Mythology | ||
| Doirend | - | Irish Mythology | ||
| EÓGan | - | Ancient Irish, Irish Mythology | ||
| Emer | EE-mur | Irish, Irish Mythology |