John Rex Winder was a leader and general authority of the Church of Jesus Christ of Latter-day Saints. He was Second Counselor in the Presiding Bishopric from 1887 to 1901, and First Counselor in the First Presidency to church president Joseph F. Smith from 1901 until his death. He was well known for his business abilities, and influenced Heber J. Grant. He was also active in politics and the militia, participating in the Utah War and the Black Hawk War (Utah). When the church came under heavy government pressure for its practice of plural marriage, Winder held the church's assets to keep them from being seized by the federal government. He was a polygamist and had four wives and 20 children.

The Presiding Bishop of the Church of Jesus Christ of Latter-day Saints is a priesthood calling with church-wide authority. The Presiding Bishop is the highest leadership position within the church's Aaronic priesthood, although most of the work in this area is delegated to the church's Young Men general presidency.