| Mysterious | |
|---|---|
&sq=Qlik&lang=&file=File:Owner_Mr_G_A_Pope_jr..svg) Racing silks of George Pope, jr | |
| Sire | Crepello |
| Grandsire | Donatello |
| Dam | Hill Shade |
| Damsire | Hillary |
| Sex | Mare |
| Foaled | 1970 |
| Country | United Kingdom |
| Colour | Chestnut |
| Breeder | George Pope Jr. |
| Owner | George Pope Jr. |
| Trainer | Noel Murless |
| Record | 8: 5-2-0 |
| Major wins | |
| Cherry Hinton Stakes (1972) Fred Darling Stakes (1973) 1000 Guineas (1973) Epsom Oaks (1973) Yorkshire Oaks (1973) | |
| Honours | |
| Timeform rating 127 | |
Mysterious (1970–1988) was a British Thoroughbred racehorse. In a racing career lasting from July 1972 until October 1973 she ran eight times and won five races. Mysterious won Group races on her first four racecourse appearances including the Classic 1000 Guineas at Newmarket Racecourse and Oaks at Epsom. She later finished second to Dahlia in the Irish Oaks at the Curragh and won the Yorkshire Oaks at York.