| Name | Color | Sex | Year of birth | Microchip | Sire | Dam | Breed | Breeder |
|---|---|---|---|---|---|---|---|---|
| Winter Wren | bay | f | 1960 | Princequillo | Flight Bird | Thoroughbred | USA | |
| Winter's Gone | d.-bay | f | 1996 | Dynaformer | Stark Winter | Thoroughbred | USA | |
| Winter's Love | bay | f | 1982 | Danzig | Cold Hearted | Thoroughbred | USA | |
| Winterhalter | c | Thoroughbred | ||||||
| 228 Winterweide | bay | f | 1922 | Summer Trush | Thoroughbred | Germany | ||
| Winver | chestnut | f | 1972 | Vertex | Windsor Lady | Thoroughbred | USA | |
| Wire | br. | f | 1811 | Waxy | Penelope | Thoroughbred | Great Britain | |
| Wire-Tapper | chestnut | c | 1938 | Ksar | Mata Hari | Thoroughbred | USA | |
| 4560-6 Wirtus | chestnut | f | 2002 | 985101024054709 | Wolfhound | Toffolux | Thoroughbred | Great Britain |
| Wiscasset | bay | f | 2000 | Kris S | Tara Roma | Thoroughbred | USA |