| Name ▲ | Age | Gender | Owner | Actions |
|---|
| Apple Amber | 10 | Mare | Cricket Hill | |
| Apple Blossom | 16 | Mare | Final Furlong | |
| Apple Hall | 15 | Mare | Final Furlong | |
| Apple Popover | 11 | Mare | Gant's Farm | |
| Apple Tart | 10 | Mare | Final Furlong | |
| Apple Thief | 17 | Mare | Final Furlong | |
| Appleton Gold | 12 | Mare | Final Furlong | |
| Appomattox | 11 | Mare | Final Furlong | |
| Apprintice | 16 | Mare | Stillwater Farms | |
| April Fooled | 20 | Mare | Final Furlong | |
| April Showers | 8 | Mare | Gotapa Racing | |
| April's Fool | 9 | Mare | Backcheck Farms | |
| Aptitude Witch | 10 | Mare | Krajina | |
| Aquamarine | 7 | Mare | AllegroThoroughbreds | |
| Aquanita | 15 | Mare | Starfish Stables | |
| Aquilifer | 11 | Mare | Krajina | |
| Ara's Magic | 10 | Mare | Final Furlong | |
| Arafel | 9 | Mare | Final Furlong | |
| Arbalestisto | 8 | Mare | Final Furlong | |
| Arbella | 9 | Mare | Final Furlong | |