Sylvester Quayle Cannon (June 10, 1877 – May 29, 1943) was an American businessman, engineer, and religious leader who served as the sixth presiding bishop of the Church of Jesus Christ of Latter-day Saints (LDS Church) from 1925 to 1938 and a member of church's Quorum of the Twelve Apostles from 1939 until his death. He was the son of George Q. Cannon, an apostle and member of the church's First Presidency.