| Registered Name | Owner / Club | Status |
|---|---|---|
| Muddy Muyster | Celine Martin Killossery | Approved |
| Mudlark | Helena Dawson Kilronan | Approved |
| Muireann | Matilda Falkede Annaharvey | Approved |
| Muirin | Vincent Doyle Cheval | Approved |
| Mulgrave Freddie | Carolyn Harty Newcastle Lyons | Approved |
| Mulisina Van De Eijkhof | Katie Severn North Cork | Approved |
| Mullach Na Si (GB) | Abigail Armstrong Copperfield | Approved |
| Mullagh Gem | Vincent Holian Copperfield | Approved |
| Mullagh Jamie | Gillian Kidd Tynagh | Approved |
| Mullagh Merry Legs | Lucy Baker Burren | Approved |
| Mullaghathie View | John McLoughlin Leitrim | Approved |
| Mullaghmor Sunset | Amy Lambert Ballycanew | Approved |
| Mullate Capptiono | Kieran Morrin Greenvalley | Approved |
| Mullinalaghta Lady | Lisa Kane Lakelands | Approved |
| Mullinalaghta Lass | Iris Brazil Mullingar | Approved |