| Mid-day Sun | |
|---|---|
 Mid-day Sun, ridden by Michael Beary, in 1937 in a photograph by Frank Griggs | |
| Sire | Solario |
| Grandsire | Gainsborough |
| Dam | Bridge of Allan |
| Damsire | Phalaris |
| Sex | Stallion |
| Foaled | 1934 |
| Country | United Kingdom |
| Colour | Bay |
| Breeder | William Thomas Sears |
| Owner | Lettice Miller (Mrs G. B. Miller) |
| Trainer | Fred Butters |
| Record | 15: 6-1-2 |
| Earnings | £ |
| Major wins | |
| Free Handicap (1937) Lingfield Derby Trial (1937) Epsom Derby (1937) Hardwicke Stakes (1937) | |
Mid-day Sun (1934–1954) was a British Thoroughbred racehorse and sire. After showing little promise as a two-year-old in 1936, Mid-day Sun improved into top class performer at three. In 1937 he won five races including The Derby and the Hardwicke Stakes at Royal Ascot. He was retired to stud in 1938 but had little success as a stallion. He was the first winner of the Derby at Epsom to be owned by a woman.