| Name | Color | Sex | Year of birth | Microchip | Sire | Dam | Breed | Breeder |
|---|---|---|---|---|---|---|---|---|
| Stirling Bridge | d.-bay | f | 1995 | Prized | Early Lunch | Thoroughbred | USA | |
| 7526-1 Stirol | chestnut | f | 1988 | 3252-1 Raut | 5854 Sana | Thoroughbred | Voskhod Stud | |
| Stishok | bay | c | 2014 | 0728-4 Shabazit | 4494-6 Smeralita | Thoroughbred | Mr. Lemziakov F.K. | |
| Stitch | chestnut | f | 1842 | Hornsea | Industry | Thoroughbred | Great Britain | |
| Stiuardessa | chestnut | f | 2002 | 0436-3 Sekol | 7508-1 Sajga | Thoroughbred | Tuchak A.S. | |
| 6801-8 Stiven Chara | bay | f | 2018 | 643110800078156 | 1599-7 Steewen Slew | 5408-7 Chonsi | Thoroughbred | Rodina Farm |
| Stivensidol | bay | c | 2012 | 0948-5 Robingud | 2086-4 Summertime Love | Thoroughbred | "Rapid" Stable | |
| Stockhausen | br. | f | 1863 | Stockwell | Thoroughbred | Great Britain | ||
| Stockholder mare | bay | f | 1833 | Pacolet mare | Thoroughbred | USA | ||
| Stockings | bay | f | 1863 | Stockwell | Go-ahead | Thoroughbred | Great Britain |