| # | Name | Origin | Meaning | Gender | |
|---|---|---|---|---|---|
| 621 | Daibheid | Irish | Dearly loved. | M | |
| 622 | Daibhid | Irish | Variant of Daibhidh: Beloved. | M | |
| 623 | Daibhidh | Irish | Beloved. | M | |
| 624 | Dailey | Irish | Variant of Daly: Gather together. | M | |
| 625 | Daimhin | Irish | Bard. | M | |
| 626 | Daire | Irish | Wealthy. | M | |
| 627 | Daith | Irish | Diminutive of Daibhidh: Beloved. | M | |
| 628 | Daithi | Irish | Beloved or quick and agile. | M | |
| 629 | Daithm | Irish | Variant of Daibhidh: Beloved. | M | |
| 630 | Dal | Irish | Variant of Dallin 'blind.'. | M | |
| 631 | Dalan | Irish | Variant of Dallin 'blind.'. | M | |
| 632 | Daley | Irish | Variant of Daly: Gather together. | M | |
| 633 | Dallan | Irish | Blind. | M | |
| 634 | Dallen | Irish | Variant of Dallin 'blind.'. | M | |
| 635 | Dallin | Irish | Blind. A saint's name. | M | |
| 636 | Dallon | Irish | Variant of Dallin 'blind.'. | M | |
| 637 | Dalon | Irish | Variant of Dallin 'blind.'. | M | |
| 638 | Daly | Irish | Gather together. | M | |
| 639 | Daman | Irish | Tame. | M | |
| 640 | Damhnait | Irish | The name of a saint. Bard. | F | |