| Name | Color | Sex | Year of birth | Microchip | Sire | Dam | Breed | Breeder |
|---|---|---|---|---|---|---|---|---|
| 4740 Ulybka 2 | grey | f | 1930 | 2219 Amir | 1020 Uslada | Orlov trotter | Khrenovskoy Stud | |
| Uman | grey | c | 2003 | 11449 Malinov.Zvon | ПО Usmeshka | pomes vtorogo pokoleniya | Lozovskoy konzavod | |
| 10458 Umarina | black | f | 1946 | 2984 Kentavr | 4725 Uzdechka | Orlov trotter | Novotomnikovskii konzavod | |
| 18630 Umberta | grey | f | 1989 | 10280 Barhatnyy | 16963 Uzornaya | Orlov trotter | Shahovskoy konzavod | |
| Umberto | chestnut | c | 1994 | 10932 Baroskop | 17896 Upsala | Orlov trotter | Dubrovskiy konzavod | |
| 7903 Umbra | grey | f | 1940 | 1796 Novator | 4726 Uzlovaya | Orlov trotter | Shahovskoy konzavod | |
| Umbra | bay | f | 2013 | 12119 Bespredel | 21488 Uspeshnaya | Orlov trotter | "Roshcha" | |
| Umeka | grey | f | 2017 | 11544 Kasatik | 22326 Uboynaya | Orlov trotter | Gestut "Zavivalovsky" | |
| Umelets | grey | c | 2014 | 12196 Myuzikl | 21045 Uprava | Orlov trotter | Egorov G.M., g. Samara | |
| Umelitsa | d.-bay | f | 2009 | 11764 Ispyt | 19774 Upakovka | Orlov trotter | Zaporojskiy konzavod |