| Name | Color | Sex | Year of birth | Microchip | Sire | Dam | Breed | Breeder |
|---|---|---|---|---|---|---|---|---|
| Urvi 13669 | f | toriyskaya | ||||||
| Urwelt | f | Holsteiner | Germany | |||||
| Usa | grey | f | 1960 | Marabu II | Jossa | Holsteiner | Germany | |
| Usambara VI | d.-bay | f | 1982 | Cor de la Bryere | Pallast | Holsteiner | Germany | |
| Usch | f | 1966 | Westfalische | Germany | ||||
| Usinge 36899 | f | Holsteiner | Germany | |||||
| Usira | f | 1982 | Montanus | Midore | Holsteiner | Germany | ||
| Uskok | chestnut | c | 1953 | Szczecin | Urna | vostochno-prusskaya | ||
| Uslada 28 | bay | f | 1976 | 3097 Rodnik | 491 Utecha,ex Ura | Trakehner | Pochinkovskii kz | |
| 298 Uspech | d.-bay | c | 1977 | 79 Podwig 18 | 491 Utecha,ex Ura | Trakehner | Pochinkovskii kz |