| Shahtoush | |
|---|---|
 Racing silks of Diana Nagle & Susan Magnier | |
| Sire | Alzao |
| Grandsire | Lyphard |
| Dam | Formulate |
| Damsire | Reform |
| Sex | Mare |
| Foaled | 29 April 1995 |
| Country | Ireland |
| Colour | Bay |
| Breeder | Barronstown Stud & Ron Con Ltd |
| Owner | Diana Nagle & Susan Magnier |
| Trainer | Aidan O'Brien |
| Record | 11: 3-2-1 |
| Earnings | £254,022 |
| Major wins | |
| Epsom Oaks (1998) | |
| Honours | |
| Timeform rating 120 | |
Shahtoush (foaled 29 April 1995) was an Irish Thoroughbred racehorse and broodmare best known for winning The Oaks in 1998. In a racing career which lasted from August 1997 to September 1998 the filly ran eleven times and won three races. Shahtoush won only one minor race as a two-year-old, but showed top-class form when she finished third in the Group One Moyglare Stud Stakes. In 1998 she finished second in the 1000 Guineas at Newmarket Racecourse and then returned to England to win the Classic Oaks over one and a half miles at Epsom. She was beaten in her two remaining races, finishing unplaced in the Yorkshire Oaks and the Irish Champion Stakes.