Sir Harry (1795 – after 1816) was a British Thoroughbred racehorse and sire. In a career that lasted from May 1798 to August 1801 he ran nineteen times and won nine races. Lightly campaigned in his first two seasons he won Epsom Derby on his racecourse debut and the Claret Stakes at Newmarket in 1799. Sir Harry was much more active in his two remaining years, running fifteen times and winning seven more races including several match races and King's Plates.