| Name ▲ | Age | Gender | Owner | Actions |
|---|
| Wistful Linen | 11 | Gelding | New Boston Stables | |
| Wistful Prodigy | 12 | Stallion | Final Furlong | |
| Wistful Purpose | 7 | Mare | Kismet Thoroughbreds | |
| Witch Doctor | 18 | Gelding | Final Furlong | |
| Witch's Brew | 6 | Mare | AllegroThoroughbreds | |
| Witch's Cat | 14 | Stallion | Final Furlong | |
| Witcher | 9 | Gelding | Vimes Racing | |
| WitchfinderGeneral | 13 | Stallion | Rainee Thoroughbreds | |
| With Anger | 21 | Stallion | Final Furlong | |
| With Gusto | 10 | Stallion | Dreadnought | |
| With Horns | 15 | Gelding | Final Furlong | |
| Within Reach | 11 | Gelding | Stillwater Farms | |
| Without A Doubt | 17 | Stallion | Final Furlong | |
| Without Compassion | 15 | Stallion | Final Furlong | |
| Without Warning | 9 | Stallion | AllegroThoroughbreds | |
| Witness Authority | 7 | Stallion | Black Storm West | |
| Witnessing Magic | 14 | Stallion | Final Furlong | |
| Witraż | 6 | Stallion | Clicker Lab | |
| Witty Actor | 11 | Stallion | Final Furlong | |
| Witty Air | 11 | Stallion | Final Furlong | |