| Countess Diana | |
|---|---|
| Sire | Deerhound |
| Grandsire | Danzig |
| Dam | T V Countess |
| Damsire | T V Commercial |
| Sex | Mare |
| Foaled | March 22, 1995[1] |
| Country | United States |
| Colour | Bay |
| Breeder | Richard S Kaster |
| Owner | Richard S Kaster, Donald Propson et al |
| Trainer | Carlos A. Garcia Patrick Byrne Bill Mott Mary Jo Lohmeier |
| Record | 14: 7-2-0 |
| Major wins | |
| Schuylerville Stakes (1997) Spinaway Stakes (1997) Alcibiades Stakes (1997) Breeders' Cup Juvenile Fillies (1997) | |
| Awards | |
| American Champion Two-Year-Old Filly (1997) | |
Countess Diana (March 22, 1995 – June 2006) was an American Thoroughbred racehorse and broodmare. As a two-year-old in 1997, she dominated the juvenile fillies division in North America, winning five of her six races including the Schuylerville Stakes, Spinaway Stakes, Alcibiades Stakes and Breeders' Cup Juvenile Fillies. At the end of the year she was voted American Champion Two-Year-Old Filly and rated the best American two-year-old filly for more than fifty years. Her subsequent racing career was relatively disappointing: she failed to win in four starts in 1998 before winning two minor races in 1999. After her retirement from racing she had limited success as a broodmare and died in 2006.