| Name | Color | Sex | Year of birth | Microchip | Sire | Dam | Breed | Breeder |
|---|---|---|---|---|---|---|---|---|
| 017773 Unecha | grey | f | 1975 | 09213 Prolog | 015281 Upa | Trotter | Gomelskiy k.z. | |
| 029163 Unesennaya Vetrom SNB | black | f | 2019 | 643099000459355 | 012671(А) Niklas Palema | 026552 Uvesistaia | Trotter | Budkov S.N. Kurskaia obl. |
| Unett | chestnut | f | 1974 | French Trotter | Sweden | |||
| Unett Rogue | bay | f | 1981 | Noble Rogue | Unett | American Trotter | Sweden | |
| Uneva J P | bay | f | 1986 | Nicholas Hanover | American Trotter | Canada | ||
| Unibroue | bay | f | 2008 | 250259500065409 | Nuage Noir | Miss Merville | French Trotter | France |
| Unicorn Pellini | bay | c | 2021 | 752098200000385 | Readly Express | Anna Karin's Girl | French Trotter | Sweden |
| Unifikatsya Lok | bay | f | 2020 | 643115137842218 | 013050(А) From The Vault | 026725(Ф) Uberlandia | French Trotter | "Konny zavod "Lokotskoy" |
| Uniformist | bay | c | 2020 | 643115137815131 | 013050(А) From The Vault | 027023(Ф) Une Lola de Nappes | French Trotter | "Konny zavod "Lokotskoy" |
| Uniformite J P | black | f | 1991 | On the Take | Uneva J P | American Trotter | USA |