Jean A. Turnage (March 10, 1926 – September 27, 2015) was the Chief Justice of the Montana Supreme Court from 1985 until 2000. He was born in St. Ignatius, Montana. He served in the United States Army Air Corps after high school. He studied on the G.I. Bill at Montana State University, predecessor of the University of Montana. In 1952, he became Lake County's attorney. He served two years in the Montana House of Representatives and 20 years in the Montana State Senate including as senate president in 1981 session.