Robert Leatham Simpson was a general authority of the Church of Jesus Christ of Latter-day Saints from 1961 until his death.

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.