| Registered Name | Owner / Club | Status |
|---|---|---|
| The Dark Knight | Rachel Wade Boyneside | Approved |
| The Dark Night | Jackie Layng Killossery | Approved |
| The Dark Raider | Christina Doyle Killarney | Approved |
| The Dashing Black | Laura Snow Drynam | Approved |
| The Decider | Melanie Love Mullingar | Approved |
| The Diamond Lady | Maeve Hegarty Inishowen | Approved |
| The Diddakoi | Julia Harley Greenhills | Approved |
| The Dowager Countess | Paula O'Brien Riverside | Approved |
| The Dromahaire Dodger | Brian Tully Lakelands | Approved |
| The Dubliner | Sara Kerwick Mill Road | Approved |
| The Duchess Of Allen | Suzi Connole Foxborough | Approved |
| The Dude Abides | Sheela Clohessy Abbeylands | Approved |
| The Eco Warrior | Sarah Goodbody Greenvalley | Approved |
| The Farriers Friend | Ultan Doherty Tir Conaill | Approved |
| The Fenian | Phillida Clarke Nuenna Farm | Approved |