| Name | Country | Region | Address |
|---|---|---|---|
| Summer Bird Syndicate & Chad Austin Reed | USA | ||
| Summer Wind Equine LLC | USA | ||
| Sumskaya gosplemstantsya | Russia | ||
| Sumskii konzavod | Russia | ||
| Sun Valley Farm | USA | ||
| Sun-Den-Kho Viktoriya Sergeyevna | Russia | Амурская область | |
| Sunagatullina Inga Vitalevna | Russia | Moscow region | |
| Sundetbaev Saudakas Zhakupovich | Russia | Orenburg region | |
| Sundetov S.Zh., Orenburgskaya oblast | Russia | Orenburg region | |
| Sunduchenko R.N., Kurskaya obl. | Russia | Курская область |