| Name | Color | Sex | Year of birth | Microchip | Sire | Dam | Breed | Breeder |
|---|---|---|---|---|---|---|---|---|
| 8911 Udivitelnyy | bay | c | 1957 | 6401 Dyujak | Orlov trotter | Kurganskiy 7 | ||
| Udivitelnyy | d.-bay | c | 2006 | 11764 Ispyt | 20189 Ulovka | Orlov trotter | Zaporojskiy konzavod | |
| UdivitelnyyVopr | d.-grey | c | 1962 | 7398 Virtuoz | 10486 Usmishka | Orlov trotter | Dubrovskiy konzavod | |
| Udmurt | d.-grey | c | 2019 | 12100 Uspeh | 21486 Uvlekatelnaya | Orlov trotter | Pustovalova S.G. | |
| Udobnaya | f | 1991 | 10963 Burlak | 18330 Ulochka | Orlov trotter | OPH "Chernyshevskoe" Saratovsk | ||
| 13276 Udochka | chestnut | f | 1957 | 6595 Kompleks | 10459 Umilnaya | Orlov trotter | Khrenovskoy Stud | |
| Udomlya VA | grey | f | 2024 | 6430990020084983 | 12047 Mengir | Uboynaya Ledi | Orlov trotter | chastnyy vladelets Vavaev A.YU., Moskovskaya obl. |
| Uembli | grey | f | 2013 | 12112 Bankir 31 | 22328 Umira | Orlov trotter | glava KFKH Melnikova T.I. | |
| Uezd | bay | c | 1993 | 10376 Zarok | 18334 Ufa | Orlov trotter | Zavivalovskii konzavod | |
| 7881 Uezdnaya | grey | f | 1940 | 1393 Zimar | 2643 Ugroza | Orlov trotter | Gryaznushinskiy |