Thomas Fitch (January 27, 1838 – November 12, 1923) was an American lawyer and politician. He defended President Brigham Young of the Church of Jesus Christ of Latter-day Saints and other church leaders when Young and his denomination were prosecuted for polygamy in 1871 and 1872. He also successfully defended Virgil, Morgan, and Wyatt Earp along with Doc Holliday when they were accused of murdering Billy Clanton, and Tom and Frank McLaury during the October 26, 1881 Gunfight at the O.K. Corral.