| Name | Country | Region | Address |
|---|---|---|---|
| Stetsker S., Kaluzhskaya oblast | Russia | Калужская область | |
| Steven Marshall Fountain of Youth Breeding | USA | ||
| Steven Nicholson & Brandi Nicholson | USA | ||
| Stewart Armstrong | USA | ||
| Stewens Volker (Germaniia) | Germany | ||
| Stiajkov A.A., | Russia | ||
| Stiftung Gestut Fahrhof | Germany | ||
| Stikina Ye.O., Moskovskaya obl. | Russia | Moscow region | |
| Stilidi Ivan Sokratovich | Russia | Moscow region | |
| Stillmeadow Farm LLC | USA |