| Registered Name | Owner / Club | Status |
|---|---|---|
| Mineview Major Tom | Caroline Farrelly Drynam | Approved |
| Mini Mush | Eva Byrne Calliaghstown | Approved |
| Minimus Star | Natasha Mitchell Sarsfield | Approved |
| Minoru Girl | Zoe Dermody Barrow Valley | Approved |
| Minty | Christine McWilliams Corrib | Approved |
| Minuaud Magic | Tom Walsh Broomfield | Approved |
| Mirabella (SWB) | Susanna Francke Cill Dara | Approved |
| Mirah Max | Louise O'Grady Winterdown | Approved |
| Mirah's Pride | Siobhan Connell Ross House | Approved |
| Mirah's Segosha | Clare Butler Kilotteran | Approved |
| Miranda de Reve | Pamela Brennan Warrington | Approved |
| Mirdads Hi Zoom | Jacqui Boland Killossery | Approved |
| Mirnah | Mia Higgins Corrib | Approved |
| Mirror Mirror | Marie Helene Finegan Headfort | Approved |
| Mis Ruby Independent | Blanaid Sharpe Dunbyrne | Approved |