| Name | Color | Sex | Year of birth | Microchip | Sire | Dam | Breed | Breeder |
|---|---|---|---|---|---|---|---|---|
| Usadnaya 2-ya | f | 1868 | Orlov trotter | |||||
| Usan | c | Orlov trotter | ||||||
| Userdnyy | grey | c | 1950 | 2132 Ulov | 8948 Zvonkaya Pesnya | Orlov trotter | Khrenovskoy Stud | |
| 9508 Ushkay | bay | c | 1965 | 7153 Uspeh | 10459 Umilnaya | Orlov trotter | Khrenovskoy Stud | |
| Ushlaya | grey | f | 2013 | 11395 Delfin | Uvertyura | Orlov trotter | Zaporojskiy konzavod | |
| Ushlaya | bay | f | 2015 | 11710 Shtok | 19150 Uzumbariya | Orlov trotter | Stud-farm "LAG-Servis+" | |
| Usilitel | bay | c | 2009 | 11757 Izgib | 21487 Uspeshnaya | Orlov trotter | KFH "Aist" Saratovskaia obl. | |
| Usilitelnaya | bay | f | 1982 | 9785 Skaz | 16232 Upornaya | Orlov trotter | kh. im. Kirova Veshkaimskogo r | |
| 1020 Uslada | f | 231 Gromadnyy | 1018 Urna 1 | Orlov trotter | ||||
| 20190 Uslada | bay | f | 1989 | 10376 Zarok | 17178 Uprugost | Orlov trotter | Zavivalovskii konzavod |