| Registered Name | Owner / Club | Status |
|---|---|---|
| Mustard Mayhem | Siobhan Connell Ross House | Approved |
| Mutley | Robert Owens Ballyhyland | Approved |
| MVS Ladybird | Agnieszka O'Dowd Winterdown | Approved |
| My Ballintoghers Cracker Jack | Susan O' Donnell Cill Dara | Approved |
| My Ballybrack Blue | Alanna Yeates Tara Hill | Approved |
| My Bellews Willow | Jean O'Connor Corrib | Approved |
| My Bilbo | Martin Oakes Tara Hill | Approved |
| My Bishophill Rolex | Johnny McNeela Cill Dara | Approved |
| My Bishophill Seanathair | Suzanne McGee Calliaghstown | Approved |
| My Blue Steel | Susan Maher Unicorn | Approved |
| My Blueberry Boy | Olivia Nolan Castle Hill | Approved |
| My Bonnie Grey | Tricia Hattingh Bel Air | Approved |
| My Boy Boysie | Rudy Schneider Donegal Gaeltacht | Approved |
| My Boy Mo | Noreen Mc Master Castle Leslie | Approved |
| My Buddy | Aoife Fitzpatrick Warrington | Approved |