| Name ▲ | Age | Gender | Owner | Actions |
|---|
| Astrological | 10 | Mare | Tall Oaks Farm | |
| Astrology | 12 | Mare | Marshall Creek Ranch | |
| At A Counrty | 15 | Mare | Final Furlong | |
| At A Stage | 15 | Mare | Final Furlong | |
| At Last | 11 | Mare | Final Furlong | |
| At The End | 9 | Mare | Tall Oaks Farm | |
| At The Roxy | 15 | Mare | Final Furlong | |
| At War With Love | 11 | Mare | Gotapa Racing | |
| At World's End | 20 | Mare | Final Furlong | |
| Atagal Annie | 15 | Mare | Final Furlong | |
| Atara | 7 | Mare | Final Furlong | |
| Ateeka | 17 | Mare | Final Furlong | |
| Ath Dara | 8 | Mare | Coleman Branch | |
| Athena | 10 | Mare | Final Furlong | |
| Athena's Destiny | 14 | Mare | Final Furlong | |
| AthousandOceans | 14 | Mare | Final Furlong | |
| Athykea | 15 | Mare | Final Furlong | |
| Athyna | 7 | Mare | Final Furlong | |
| Atlanta | 17 | Mare | Final Furlong | |
| Atlanta Belle | 17 | Mare | Final Furlong | |