| Name | Color | Sex | Year of birth | Microchip | Sire | Dam | Breed | Breeder |
|---|---|---|---|---|---|---|---|---|
| Soul Dream | bay | f | 1990 | Alleged | Normia | Thoroughbred | USA | |
| Soumana | bay | f | 1979 | Pharly | Faizebad | Thoroughbred | France | |
| Sound Action | f | 1983 | Resound | Friskie Billie | Thoroughbred | USA | ||
| Sound Asleep | bay | f | 1999 | Woodman | Sleep Easy | Thoroughbred | USA | |
| Sound of Success | chestnut | f | 1969 | Successor | Belle Musique | Thoroughbred | USA | |
| Sound Speed Goal | bay | c | 2020 | 643090000419500 | 1234-6 Established Goal | 5083-7 Aktiv Memori | Thoroughbred | Mr Mutaev Sh. V. |
| Sound Sweep | bay | f | 1966 | Thoroughbred | USA | |||
| Sound Track | c | 1957 | Whistler | Bridle Way | Thoroughbred | Great Britain | ||
| Sound Wisdom | bay | f | 1992 | Pirate's Bounty | Kaylem Ho | Thoroughbred | USA | |
| Soundings | bay | f | 1983 | Mr. Prospector | Ocean's Ansver | Thoroughbred | USA |