| Rockfel | |
|---|---|
 | |
| Sire | Felstead |
| Grandsire | Spion Kop |
| Dam | Rockliffe |
| Damsire | Santorb |
| Sex | Mare |
| Foaled | 1935 |
| Country | United Kingdom |
| Colour | Brown |
| Breeder | Weir Bank Stud |
| Owner | Hugo Cunliffe-Owen |
| Trainer | Ossie Bell |
| Record | 13: 8–0–2 |
| Major wins | |
| Princess Elizabeth Stakes (1938) 1000 Guineas (1938) Epsom Oaks (1938) Champion Stakes (1938) | |
| Honours | |
| Top-rated British three-year-old (1938) Rockfel Stakes at Newmarket | |
Rockfel (1935 – November 1941) was a British Thoroughbred racehorse and broodmare, best known for winning two Classics in 1938. In a career which lasted from July 1937 until May 1939 she ran thirteen times and won eight races. Rockfel began her career at the lowest level, being beaten in a selling race, but improved to become recognised as one of the best British racemares of the 20th century. In 1938 she was the dominant three-year-old in England, winning the 1000 Guineas over one mile at Newmarket and the Oaks over one and a half miles at Epsom. In the autumn she defeated colts in the Champion Stakes and the Aintree Derby and was retired after winning her only race as a four-year-old. She produced one foal before dying in November 1941.