| Name | Color | Sex | Year of birth | Microchip | Sire | Dam | Breed | Breeder |
|---|---|---|---|---|---|---|---|---|
| Wagtail | bay | f | 1818 | Prime Minister | Orville mare | Thoroughbred | Great Britain | |
| Wahhadz | bay | f | 2018 | 643093300046089 | 1210-6 Voljazh | 4223-6 Hamera | Thoroughbred | Mr. Dzhatdoev N.M. |
| Wahrheit | chestnut | f | 1893 | Thoroughbred | Germany | |||
| Waif | bay | f | 1916 | Greenback | Panasine | Thoroughbred | USA | |
| Waima | bay | f | 1897 | Bona Vista | Agnes Court | Thoroughbred | Great Britain | |
| Waisenknabe | chestnut | c | 1872 | Buccaneer | Sweet Katie | Thoroughbred | Germany | |
| Wait a Bit | chestnut | c | 1939 | Espino | Thoroughbred | USA | ||
| Wait and Take | f | 1971 | Tamerlane | Waverley | Thoroughbred | Great Britain | ||
| Wait Not | chestnut | f | 1949 | Wait a Bit | Reimburseme | Thoroughbred | USA | |
| Wait Now | bay | f | 1960 | Vimy | Fair Comet | Thoroughbred | Great Britain |