| Name | Color | Sex | Year of birth | Microchip | Sire | Dam | Breed | Breeder |
|---|---|---|---|---|---|---|---|---|
| Stone Flower | bay | f | 1994 | Storm Bird | Lively Living | Thoroughbred | USA | |
| Stone Reef | d.-bay | c | 2005 | Cherokee Run | Slow Jazz | Thoroughbred | USA | |
| Stoneridge | bay | f | 2008 | Harlan's Holiday | Menu Varnish | Thoroughbred | USA | |
| Stonewalk | d.-bay | c | 1971 | Thoroughbred | USA | |||
| Stop Her | chestnut | f | 1903 | Carbine | Catcher | Thoroughbred | Great Britain | |
| Stop On Red | chestnut | f | 1959 | To Market | Danger Ahead | Thoroughbred | USA | |
| Stop Press | bay | f | 1988 | Sharpen Up | Glad Tidings | Thoroughbred | USA | |
| Stop Start | bay | c | 2020 | 981020035754282 | Upstart | 6996-8 Rockhouse | Thoroughbred | Nancy Shuford |
| Stop the Fighting | c | 1983 | Cure The Blues | Fighting | Thoroughbred | Great Britain | ||
| Stop the Music | bay | c | 1970 | Hail to Reason | Bebopper | Thoroughbred | USA |