| Name | Color | Sex | Year of birth | Microchip | Sire | Dam | Breed | Breeder |
|---|---|---|---|---|---|---|---|---|
| Sisifas | bay | c | 1988 | 3315 Lefeber | 0340 Sessija | Trakehner | Nemuno Gestut | |
| Sissi | f | 1967 | Sarmon | Gotengold | Hannoveraner | |||
| Sissi | bay | f | 1980 | Landgraf I | Nueance 321 210792976 | Holsteiner | Germany | |
| Sissy | bay | f | 1992 | Sao Paulo 330868487 | Brennie | Hannoveraner | Germany | |
| 256 Sistema 38 | br. | f | 1945 | Trakehner | Trakenen | |||
| Sistema | f | ohne Rasse | ||||||
| Sistema, Sistema | bay | f | 2015 | Sandro II | Selena, Selena | Hannoveraner | ||
| 1557 Sita | d.-bay | f | 1989 | Arg | Zirka | Ukrainische warmblut | ||
| Sitall Slavnyy paren | grey | c | 2020 | Papilon | 2894 Sagitta | Trakehner | Kryuchkova Anna Ilinichna | |
| Sitsilya | Db. | f | 1949 | 41 Sewer 56 | Tsentrofule 100 | trakenenskaya pomes | "Kirovsky konny zavod" |