| Name ▼ | Age | Gender | Owner | Actions |
|---|
| Upside Down | 9 | Stallion | Gintara Lodge | View |
| Upright Woman | 3 | Filly | Rainee Thoroughbreds | View |
| Uppsala Domkyrka | 7 | Stallion | Ivy Creek Farm | View |
| Uppsala | 3 | Filly | Fair Isle Farm | View |
| Upperchurch | 7 | Mare | Tall Oaks Estate | View |
| Upper East Side | 7 | Mare | Kismet Thoroughbreds | View |
| Upon The Altar | 4 | Mare | Clicker Lab | View |
| Uplifting | 8 | Stallion | Ivy Creek Farm | View |
| Upchurch | 5 | Stallion | Tall Oaks Farm | View |
| UpInThePolls | 2 | Filly | Rainee Thoroughbreds | View |
| Up Til Dawn | 4 | Mare | Desert Wind Farm | View |
| Up In Flames | 3 | Colt | Coleman Branch | View |
| Up In Arms | 5 | Stallion | Rainee Thoroughbreds | View |
| Up Here Alone | 5 | Mare | Cricket Hill | View |
| Unyielding Spirit | 2 | Colt | AllegroThoroughbreds | View |
| Unwritten Code | 4 | Stallion | AllegroThoroughbreds | View |
| Unvanquished | 5 | Filly | Gant's Farm | View |
| Unusual Wisp | 11 | Stallion | Final Furlong | View |
| Unusual Trick | 2 | Colt | Krajina | View |
| Unusual Top | 4 | Stallion | Gant's Farm | View |