| Name | Color | Sex | Year of birth | Microchip | Sire | Dam | Breed | Breeder |
|---|---|---|---|---|---|---|---|---|
| Wiasma | chestnut | f | 1845 | Hetman Platoff | Mickleton Maid | Thoroughbred | Great Britain | |
| Wichuraiana | chestnut | f | 1963 | Worden 2 | Excelsa | Thoroughbred | Great Britain | |
| Wichuraiana | f | 1943 | War Admiral | Fleur | Thoroughbred | USA | ||
| Wicked Kate | br. | f | 1792 | Thoroughbred | Great Britain | |||
| Wicked Kate | br. | f | 1792 | Thoroughbred | Great Britain | |||
| Wicked Strong | bay | c | 2011 | Hard Spun | Moyne Abbey | Thoroughbred | ||
| Wicked Ways | bay | f | 1987 | Devil's Bag | Lien | Thoroughbred | USA | |
| Wide Awake | bay | f | 1964 | Major Portion | Wake Island | Thoroughbred | Great Britain | |
| Widgeon | bay | f | 1827 | Whisker | Dick Andrews mare | Thoroughbred | Great Britain | |
| Widow Parr | chestnut | f | 1968 | Royal Record | Agin The Law | Thoroughbred | Great Britain |