| Name | Color | Sex | Year of birth | Microchip | Sire | Dam | Breed | Breeder |
|---|---|---|---|---|---|---|---|---|
| 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 | |
| Wait Til Dawn | d.-bay | f | 2009 | Giant's Causeway | Path of Thunder | Thoroughbred | USA | |
| Waiting for a Star | chestnut | f | 2016 | Ghostzapper | Evening Sky | Thoroughbred | USA | |
| Waitingformargaret | bay | f | 1985 | Kris | Princess Seal | Thoroughbred | Great Britain | |
| Wajima | bay | c | 1972 | Bold Ruler | Iskra | Thoroughbred | USA | |
| Wake Island | bay | f | 1959 | Relic | Alor Star | Thoroughbred | Great Britain | |
| Wake Robin | bay | f | 1963 | Summer Tan | War Ribbon | Thoroughbred | USA | |
| Wakefield Tower | d.-bay | c | 1964 | Nashua | Slave | Thoroughbred | USA |