| Name | Color | Sex | Year of birth | Microchip | Sire | Dam | Breed | Breeder |
|---|---|---|---|---|---|---|---|---|
| Unify | bay | f | 1993 | Farma Way | La Affirmed | Thoroughbred | USA | |
| 4848-6 Unikalnaya | bay | f | 2011 | 643110000212950 | 0473-4 Street Poker | 2562-4 Umnica | Thoroughbred | Mr Bolokov R.A. |
| Unikalnyi | d.-bay | c | 2009 | не введен | 0103-2 Corvinius | 0745-2 Untziya | Thoroughbred | Mindibekov Ivan Ivanovich |
| Unikon | bay | c | 2015 | не введен | 0103-2 Corvinius | 3434-5 Ursula Vtoraia | Thoroughbred | Mr Tharkakhov N.H. |
| Unikum | bay | c | 2001 | 0103-2 Corvinius | 0744-2 Umbra | Thoroughbred | APK "Kavkaz" | |
| Uniland | bay | c | 2023 | 643110800472926 | 0922-5 Palander | 6489-8 Uni Best | Thoroughbred | Volgogradsk Stud |
| Unincumbered | bay | f | 1998 | Unbridled | Easy Now | Thoroughbred | USA | |
| Union | bay | f | 1967 | Bernardus | Uno | Thoroughbred | GDR | |
| Union City | d.-bay | f | 2006 | Dixie Union | City Sister | Thoroughbred | USA | |
| Union mare | f | Old Union | The Kirtley mare | Thoroughbred | USA |