Orby (horse)
 Orby (1904–1918) was an Anglo-Irish Thoroughbred racehorse and sire. In a racing career which lasted from 1906 to 1907 he ran seven times and won four races. In 1907 he became the first Irish-trained horse and the third owned by an American to win the Epsom Derby. In the same year he became the first horse to complete the Epsom Derby-Irish Derby double but his racing career was ended by training problems after one further race. He went on to become a successful stallion.