Eager (1788 – after 1795) was a British Thoroughbred racehorse. In a career that lasted from April 1791 to July 1795 he ran twenty-two times and won ten races. In 1791 he proved himself one of the best British colts of his generation, by winning the Epsom Derby and four other races. Eager won a further four races in 1792, but the level of his form declined thereafter and he won only one race in his last three seasons. Towards the end of his racing career he was gelded.