| Name | Color | Sex | Year of birth | Microchip | Sire | Dam | Breed | Breeder |
|---|---|---|---|---|---|---|---|---|
| Sitta | bay | f | 1958 | Holsteiner | Germany | |||
| Situs | c | 1970 | Westfalische | |||||
| Siwasch | bay | c | 1987 | 145 Wnutschek 76 | 0499 Serenada | Trakehner | Pokrowskij s-d BP | |
| Siwe, Sive | chestnut | f | 1985 | 00269 Snajge | Mischling | "Ristitee Talu" | ||
| Sixtus | black | c | 1989 | Habicht | Stradelle | Trakehner | Germany | |
| Sizilija | chestnut | f | 1984 | 3315 Lefeber | 0340 Sessija | Trakehner | Nemuno Gestut | |
| Sjalomaj | f | 1976 | Lucky Boy | gollandskaya teplokrovnaya | ||||
| Sjaro Н 9851 | f | Sputnik 5379 | Ulli 7475 | Trakehner | ||||
| Sjatek 4 | bay | c | 1998 | 186 Sasor 3 | Tilbi 10 | trakeno-vengerskaya pomes | Olimp Kubani | |
| 077 Sjawa | d.-bay | f | 1962 | Hubertus | Zguba | Trakehner | Posadowo ks |