| Pyrrhus The First | |
|---|---|
 Pyrrhus The First. Painting by John Frederick Herring Sr. | |
| Sire | Epirus |
| Grandsire | Langar |
| Dam | Fortress |
| Damsire | Defence |
| Sex | Stallion |
| Foaled | 1843 |
| Country | United Kingdom of Great Britain and Ireland |
| Colour | Chestnut |
| Breeder | Colonel Bouverie |
| Owner | John Gully Mr Harrison |
| Trainer | John Day |
| Record | 12:10-2-0 |
| Major wins | |
| Newmarket Stakes (1846) Epsom Derby (1846) | |
Pyrrhus The First (1843 – 1862) was a British Thoroughbred racehorse and sire. In a career that lasted from April 1846 to 1849 he competed twelve times and won ten races, including one walk-over. In the summer of 1846 he proved himself one of the best British colts of his generation, winning The Derby. After a disappointing year in 1847 he returned to form as a five-year-old and was undefeated in his last seven races. He was retired after winning his only race as a six-year-old and went on to stand as a stallion in England and France.