| Name | Color | Sex | Year of birth | Microchip | Sire | Dam | Breed | Breeder |
|---|---|---|---|---|---|---|---|---|
| Wager | chestnut | f | 1925 | Polymelian | Election Bet | Thoroughbred | USA | |
| Waggley | grey | f | 1983 | Hagley | Jungle Rhythm | Thoroughbred | USA | |
| Wagner | bay | c | 1882 | Prince Charlie | Thoroughbred | Great Britain | ||
| Wagner Hobby | bay | c | 2006 | 643094100001473 | Harlan's Holiday | Outright Wager | Thoroughbred | USA |
| Wagon Limit | chestnut | c | 1994 | Conquistador Cielo | Darlin Lindy | Thoroughbred | USA | |
| Wagonette | chestnut | f | 1884 | Vichsbury | Thoroughbred | France | ||
| 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 |