Joseph Fielding Smith Jr. was an American religious leader and writer who served as the tenth president of the Church of Jesus Christ of Latter-day Saints from 1970 until his death in 1972. He was the son of former church president Joseph F. Smith and the great-nephew of Church founder Joseph Smith.

The President of the Church is the highest office of the Church of Jesus Christ of Latter-day Saints. It was the office held by Joseph Smith, the church's founder. The church's president is its leader and the head of the First Presidency, its highest governing body. Latter-day Saints consider the president of the church to be a "prophet, seer, and revelator" and refer to him as "the Prophet", a title that was originally given to Smith. When the name of the president is used by adherents, it is usually prefaced by the title "President". Russell M. Nelson has been the president since January 14, 2018.