| Registered Name | Owner / Club | Status |
|---|---|---|
| Atlantic Dancer | Meredith Jackson Castle Leslie | Approved |
| Atlantic Firefly | Ciara Flynn Copperfield | Approved |
| Atlantic Guru | Aishlinn Nolan Bel Air | Approved |
| Atlantic Jack | Briget Kenny Castledermot | Approved |
| Atlantic Waves | John McDaid Donegal Gaeltacht | Approved |
| Attanagh (IRE) | JJ Bolger Thomastown and District | Approved |
| Atticus Hill | Michael Peyton Barnacarroll | Approved |
| Attila | Derry Walker Rathangan | Approved |
| Attractive Proposition | Michael Phillips Mill Road | Approved |
| Atty Aldto Z | Margaret McCumiskey Winterdown | Approved |
| Attyrory Jacky | Sheena Kinsella Cheval | Approved |
| Attyrory Show Down | Lorna Hyde Knocknamana Country | Approved |
| Auburn Arrow | Gabriele Ehrke Moyglare | Approved |
| Auburn Covers | Ian Tighe Brooke Lodge | Approved |
| Auburn Windy Fallon | Annemieke Plass South Roscommon | Approved |