John Henry Martin (1875–1944), commonly referred to as "Skeets" Martin, was an American jockey who achieved many racing wins in the United States and the United Kingdom during the late nineteenth and early twentieth century. His most notable race wins were the 1902 Epsom Derby on Ard Patrick and the 1903 2,000 Guineas on Rock Sand. Martin's technique was often at odds with racing authority rules, his license being suspended several times, and his early career was marred by allegations of cheating and underhanded gambling practices.