| Name | Color | Sex | Year of birth | Microchip | Sire | Dam | Breed | Breeder |
|---|---|---|---|---|---|---|---|---|
| UkromnayaGavan | grey | f | 1975 | 9580 Gopak | 13276 Udochka | Orlov trotter | Khrenovskoy Stud | |
| Ukrop | bay | c | 1986 | 9732 Persid | 16974 Upravka | Orlov trotter | Khrenovskoy Stud | |
| Ukrop | grey | c | 2010 | 11817 Pirkofen 91 | 21486 Uvlekatelnaya | Orlov trotter | ch/v Lebedev Iu.B. Moskovskaia | |
| Ukrop, zabit | c | 2000 | 10842 Pobornik | 17178 Uprugost | Orlov trotter | Zavivalovskii konzavod | ||
| Ukrotitelnitsa 3 | grey | f | 1989 | 10407 Kapor | 16972 Upa | Orlov trotter | Khrenovskoy Stud | |
| Ukryuk | grey | c | 1961 | 7011 Rion | 10459 Umilnaya | Orlov trotter | Khrenovskoy Stud | |
| Uksus | bay | c | 1965 | 7153 Uspeh | 13276 Udochka | Orlov trotter | Khrenovskoy Stud | |
| Uktus | bay | c | 1968 | 7153 Uspeh | 10459 Umilnaya | Orlov trotter | Khrenovskoy Stud | |
| Ukupnik | grey | c | 2010 | 643094100237094 RUS | 11482 Prokaznik 51 | 19150 Uzumbariya | Orlov trotter | "Streleckoe" |
| Ulan | c | 1962 | 7747 Lal | 7927 UdachnayaModel | Orlov trotter | Khrenovskoy Stud |