William Theopilus Jones (February 20, 1842 – October 9, 1882) was a Delegate from the Territory of Wyoming. Born in Corydon, Indiana, Jones received a liberal schooling.He studied law.He was admitted to the bar in 1865 and commenced practice in Corydon, Indiana.During the Civil War served in the Union Army as major of the Seventeenth Regiment, Indiana Volunteer Infantry.He was appointed associate justice of the supreme court of the Territory of Wyoming in 1869.He settled in Cheyenne, Wyoming, in 1869.