| Name | Color | Sex | Year of birth | Microchip | Sire | Dam | Breed | Breeder |
|---|---|---|---|---|---|---|---|---|
| Yarmarka | bay | f | 1995 | 3698-1 Ya Zaman | 0632-2 Rumba | Thoroughbred | Derkul Stud | |
| Yarmouth | d.-bay | f | 1952 | Watling Street | Knight's Daughter | Thoroughbred | USA | |
| Yarn | d.-bay | f | 1987 | Mr. Prospector | Narrate | Thoroughbred | USA | |
| Yarnuta | bay | f | 1906 | Dunure | Chamara | Thoroughbred | u Lyubomirskikh | |
| Yarogor | chestnut | c | 2016 | 1153-6 Ghost Cat | 3953-6 Yarila | Thoroughbred | Studfarm "711" | |
| Yaromir | bay | c | 2021 | 643110800165536 | 0561-4 A.T. Kinson | 5513-7 Yanvarskaya Metel | Thoroughbred | Donskoi Stud |
| Yaropolk | chestnut | c | 2007 | 643094100002239 | Smarty Jones | Starboard Tack | Thoroughbred | USA |
| Yaroslav Mudryi | bay | c | 2019 | 643110800165424 | 0901-5 Monomakh | 5143-7 Driada | Thoroughbred | Donskoi Stud |
| Yaroslavl | d.-bay | c | 2015 | 643090000060649 | 0959-5 Scatter the Gold | 4562-6 Yang Hight | Thoroughbred | Mr. Hahalev R.O. |
| Yaroslavna | chestnut | f | 1901 | Graf-Yanovskij | Radiata | Thoroughbred |