| Name | Country | Region | Address |
|---|---|---|---|
| Oros k/s | Russia | Krasnodar Region | |
| Oros Stud | Russia | Krasnodar Region | |
| Oros-L ks | Russia | Калужская область | |
| Orozbayev Daniyar Malikbekovich | Kirghizia | ||
| Orozbekov Kayrat | Russia | Moscow | |
| Orozmamet Uulu Abdilashim | Russia | Rostov region | |
| Orpendale, Chelston & Wynatt | USA | ||
| Orru Alessandro Efisio | Italia | ||
| Orsk (28) stud | |||
| Ortabaev Khasan Kazimovich | Russia | Stavropol region |