| Name | Color | Sex | Year of birth | Microchip | Sire | Dam | Breed | Breeder |
|---|---|---|---|---|---|---|---|---|
| Unica | f | 1982 | Farnese 321210380460 | Pamila | Holsteiner | Germany | ||
| Uniek | chestnut | f | 2001 | Cabochon | Zinta | gollandskaya teplokrovnaya | Netherlands | |
| Uniek | chestnut | c | 1965 | |||||
| Uniflore | f | 1964 | Aviso | Navale | anglo-arabskaya | |||
| Uniform | bay | f | 1982 | Lord | Italien | Holsteiner | ||
| Unikum 429 | c | Trakehner | ||||||
| Unique | chestnut | f | 2001 | Osmiun | Kimberley | gollandskaya teplokrovnaya | Netherlands | |
| Unique of Class | bay | f | 2001 | Lord Sinclair | Touch of Class | Oldenburger | Germany | |
| Unistar | bay | c | 2001 | gollandskaya teplokrovnaya | Netherlands | |||
| Unistreel | f | Minstreel | Ornamiek | gollandskaya teplokrovnaya |