| John Forth | |
|---|---|
 Frederick, with (presumed) John Forth on board. Painting by John Frederick Herring Sr. (1795-1865) | |
| Occupation | Jockey |
| Born | c. 1769 |
| Died | 4 February 1848 Oxford Street, London |
| Resting place | St. Martin's Churchyard, Epsom |
| Major racing wins | |
| Major races (as jockey) Epsom Derby (1829) Major races (as trainer) Epsom Derby (1829, 1840, 1845) | |
| Significant horses | |
| Frederick, Little Wonder, The Merry Monarch | |
John Forth (c. 1769 – 4 February 1848) was a British jockey and racehorse trainer. He is the oldest man to have ridden the Derby winner and one of the very few to have both ridden and trained the winner.