| Name | Color | Sex | Year of birth | Microchip | Sire | Dam | Breed | Breeder |
|---|---|---|---|---|---|---|---|---|
| Whitney | d.-bay | f | 1993 | 3408-1 Neman | Whisky | Thoroughbred | Czech Republik | |
| Whitsett | bay | f | 1977 | Damascus | Brown Berry | Thoroughbred | USA | |
| 3335-1 Whitstead | chestnut | c | 1975 | Morston | Tudor Romp | Thoroughbred | Great Britain | |
| Who Can Tell | chestnut | f | 1958 | Thoroughbred | Great Britain | |||
| Who Dini | bay | f | 1948 | Dini | Thoroughbred | USA | ||
| 1009-5 Who Drew Tatum | bay | c | 2007 | Langfuhr | Rahbaby | Thoroughbred | USA | |
| Who Knows | br. | c | 1984 | Known Fact | Happy Kin | Thoroughbred | Ireland | |
| Who's Ahead | chestnut | f | 1957 | Princequillo | Who Dini | Thoroughbred | USA | |
| Who's That Girl | chestnut | f | 1971 | Buckpasser | Napalm | Thoroughbred | USA | |
| Who's To Know | bay | f | 1970 | Fleet Nasrullah | Masked Lady | Thoroughbred | USA |