| Name | Country | Region | Address |
|---|---|---|---|
| Ostrovskaya Olga Vladimirovna | Russia | Moscow | |
| Ostrovskaya Vita Sergeyevna | Russia | Krasnoyarsk region | |
| Ostrovsky Igor Viktorovich | Russia | Republic of Altai | |
| Ostrovsky Nikolay Vladimirovich | Russia | ||
| Ostryagin A.A. g. Moskva | Russia | Moscow | |
| Ostryagin K.A. , g Tyumen | Russia | ||
| Ostryagina E.A. Tyumenskaya oblast | Russia | Tyumen region | |
| Ostryan Anatoliy Anatolyevich | Russia | Saratov region | |
| Otarashvili Tatyana Vladimirovna | Russia | S.-Peterburg | |
| otd. po konnomu sportu "Yunost Rossii" | Russia | Smolensk region |