| Name ▼ | Age | Gender | Owner | Actions |
|---|---|---|---|---|
| Urban Cowboy | 2 | Colt | Hidden Oak Farm | View |
| Uraeus | 8 | Mare | Windsor Stud | View |
| Ch. Upside Down | 10 | Stallion | Gintara Lodge | View |
| Upright Woman | 4 | Mare | Rainee Thoroughbreds | View |
| Uppsala Domkyrka | 8 | Stallion | Ivy Creek Farm | View |
| Uppsala | 4 | Mare | Fair Isle Farm | View |
| Upperchurch | 8 | Mare | Tall Oaks Estate | View |
| Upper East Side | 8 | Mare | Kismet Thoroughbreds | View |
| Upon The Altar | 5 | Mare | Clicker Lab | View |
| Uplifting | 9 | Stallion | Ivy Creek Farm | View |
| Upchurch | 6 | Stallion | Tall Oaks Farm | View |
| UpInThePolls | 3 | Filly | Rainee Thoroughbreds | View |
| Up in Space | 2 | Colt | Black Briar Stables | View |
| Up Til Dawn | 5 | Mare | Desert Wind Farm | View |
| Up In Flames | 4 | Stallion | Coleman Branch | View |
| Up In Arms | 6 | Stallion | Rainee Thoroughbreds | View |
| Unyielding Spirit | 3 | Colt | AllegroThoroughbreds | View |
| Unwritten Code | 5 | Stallion | AllegroThoroughbreds | View |
| Unwelcome | 2 | Filly | Black Storm West | View |
| Unwaivering | 2 | Filly | Gintara Lodge | View |