| Registered Name | Owner / Club | Status |
|---|---|---|
| Maximus P | Agnieszka Mofina Cill Dara | Approved |
| Maximus Vivendi | Paddy Barry Tara Hill | Approved |
| Maxinamillion | Dawn Clerkin Castle Leslie | Approved |
| Maxmillian Candy | Johanna Teague Greenhills | Approved |
| May Belle | Pauline Woodhouse Clonlara | Approved |
| Maybe A Diamond | Niamh Grimes Calliaghstown | Approved |
| Maybird | Holly Conte Dunamase | Approved |
| Mayfield Ralph | Robert Tierney Newpark | Approved |
| Mayfield Romeo | Jane Hennigan Tara Hill | Approved |
| Mayflower Willow | Clare Butler Kilotteran | Approved |
| Mayiris (IRE) | Maria Blomen Highland Lodge | Approved |
| Maylaine | Lindsay Doyle Clonough | Approved |
| Maypole Storm | Nuala Stafford Cheval | Approved |
| Maytata | Helena Hurley South West | Approved |
| Mazzamora Encore | Dympna Gibbons Nuenna Farm | Approved |