| Name | Country | Region | Address |
|---|---|---|---|
| Wimberley Bloodstock, LLC | USA | ||
| Winchell Thoroughbreds, LLC | USA | ||
| Winchester Place Thoroughbreds, LLC & Matt Jackson | USA | ||
| Wind Hill Farm | USA | ||
| Windylea Farm-New York, LLC | USA | ||
| Winner's Farm | USA | ||
| Winnitschina KSP | Ukraine | ||
| Winnizkaja O.I. | Russia | Moscow | |
| Winogradnyj, swch. | |||
| Winogradow G.W. | Russia | Moscow region |