| Name ▲ | Age | Gender | Owner | Actions |
|---|
| Yamamoto | 11 | Stallion | Final Furlong | |
| Yandilla | 9 | Mare | Port Pirie | |
| Yankee Axe | 17 | Gelding | Final Furlong | |
| Yankee Doodle | 8 | Stallion | Gintara Lodge | |
| Yankee Moon | 16 | Stallion | Final Furlong | |
| Yankee Picnic | 19 | Mare | Final Furlong | |
| Yankee Stadium | 12 | Stallion | Starfish Stables | |
| Yansi | 5 | Stallion | Clicker Lab | |
| Yantze | 9 | Gelding | AllegroThoroughbreds | |
| Yay or Nay | 10 | Mare | Clicker Lab | |
| Year of the Horse | 11 | Mare | Clicker Lab | |
| Yellow Brick Road | 18 | Gelding | Final Furlong | |
| Yellow Fever | 8 | Stallion | Cricket Hill | |
| Yellow Journalism | 7 | Stallion | Cricket Hill | |
| Yellow Lights | 15 | Stallion | Final Furlong | |
| Yellow Vest | 6 | Stallion | Cricket Hill | |
| Yes I Did | 14 | Stallion | Final Furlong | |
| Yes It's Magic | 14 | Stallion | Final Furlong | |
| Yes It's Real | 10 | Gelding | Port Pirie | |
| Yes Its Fashion | 13 | Stallion | Final Furlong | |