Joseph Isaac Clanton (1847 – June 1, 1887) was a member of a loose association of outlaws known as The Cowboys who clashed with lawmen Wyatt, Virgil and Morgan Earp as well as Doc Holliday. On October 26, 1881, Clanton was present at the Gunfight at the O.K. Corral in the boomtown of Tombstone, Arizona Territory but was unarmed and ran from the gunfight, in which his 19-year-old brother Billy was killed.