Mark Wells White (born March 17, 1940) is an American lawyer, who served as the 43rd Governor of Texas from 1983-1987.
Born in Henderson, Texas, in Rusk County, White attended Baylor University in Waco, and was a member of the prestigious Tryon Coterie Club, now Phi Delta Theta (Texas Lambda Chapter) at Baylor. He graduated with a law degree in 1965. After spending time practicing law in a private practice in Houston (Harris County), White served as the state's assistant attorney general. In 1973, White was appointed as Texas secretary of state under Governor Dolph Briscoe.
White served as secretary of state until 1977, when he resigned to run for state attorney general, where he served until 1983. In the 1978 general election, White defeated the Republican choice, James A. Baker, III (59% to 40%), a Houston lawyer, businessman, and power broker affiliated with the Bushes of Houston. As the state's chief enforcement officer, he co-chaired the Federal-State Enforcement Coordinating Committee and was a member of the Governor's Organized Crime Prevention Council. On the national level, he was elected Chairman of the Southern Conference of Attorneys General in May of 1981.