| Name ▲ | Age | Gender | Owner | Actions |
|---|
| Arabesque | 3 | Filly | Starfish Stables | |
| Arabian Knight | 10 | Stallion | Krajina | |
| Arabian Night | 8 | Stallion | Final Furlong | |
| Arabian Stars | 6 | Mare | Final Furlong | |
| Aracari | 3 | Colt | Black Storm West | |
| Aragog | 5 | Stallion | Dreadnought | |
| Arai | 4 | Stallion | Cricket Hill | |
| Arak | 6 | Mare | New Boston Stables | |
| Aransas Bay | 2 | Colt | Viscount Lodge | |
| Arbuscular | 5 | Stallion | Krajina | |
| Arcade | 4 | Stallion | AllegroThoroughbreds | |
| Arcana | 3 | Filly | Hidden Oak Farm | |
| Archie | 6 | Stallion | Final Furlong | |
| Archimonde | 4 | Stallion | Desert Wind Farm | |
| Archon | 10 | Stallion | Final Furlong | |
| Arcite | 5 | Mare | New Boston Stables | |
| Arctic | 8 | Mare | Vimes Racing | |
| Arctic Fairy | 5 | Mare | Denoux Stud | |
| Arda's Promise | 4 | Stallion | Tall Oaks Estate | |
| Ardent Bubble | 7 | Stallion | Final Furlong | |