| Registered Name | Owner / Club | Status |
|---|---|---|
| Achill Allergro | Catherine Fitzpatrick Tinahely | Approved |
| Achill Heathcliff | Samantha Murphy South West | Approved |
| Acorns Fleur | Ronan Kinsella Acorn | Approved |
| Acorns Fred | Ronan Kinsella Acorn | Approved |
| Acrefield Enzo | Emma O'Connor Benbulben | Approved |
| Acrefield Romeo | Emma O'Connor Benbulben | Approved |
| Actinium Lily | Lauren McLaughlin Inishowen | Approved |
| Action | Carla Mc Ginley Donegal Gaeltacht | Approved |
| Action Lord (IRE) | Lisa Gorman Oakleaf | Approved |
| Action's Bond Girl W | Rita Naughton Tinahely | Approved |
| Adam Abu | Aoife Brady Lakelands | Approved |
| Adams Charm (IRE) | Ray Coleman Cheval | Approved |
| Adams Eve | Emmeline Sandes Tinahely | Approved |
| Adamstown Boy | Susan O'Regan Earl's Well | Approved |
| Adamstown Lad | John Joe Grace Slieve Bloom | Approved |