| Registered Name | Owner / Club | Status |
|---|---|---|
| Dukes Alfie | Joanne Corrigan Boyneside | Approved |
| Dukes Mill Clover | Ann Kennedy Anvil | Approved |
| Dumbledore | John Maguire Cheval | Approved |
| Dunard Roberto Royale | Cathy Cuffe Mosstown | Approved |
| Dunard Ruby | Eimear Dunne Stracomer | Approved |
| Dunbeggan Kings Imp | Sarah Gaffney Foxborough | Approved |
| Dunbeggan Misty Lady | Danielle Murphy Arderin | Approved |
| Dunbell | Lorraine Scott Piltown | Approved |
| Dunboy Cailin | Aoife Horan Castledermot | Approved |
| Dunboy Dutchess | Cleo Murphy Castledermot | Approved |
| Duncorr Bud | Sean Scully Lakelands | Approved |
| Dungar Prize Bond | Helena Ryan Arderin | Approved |
| Dungar Red Sox | Marie Smiddy Lismore | Approved |
| Dungimmon Dancer | Simone Klinkert Ross House | Approved |
| Dungimmon Duke | Oonagh O' Duffy Acorn | Approved |