Sterling Welling Sill (March 31, 1903 – May 25, 1994) was a general authority in the Church of Jesus Christ of Latter-day Saints (LDS Church). He was an Assistant to the Quorum of the Twelve Apostles from 1954 to 1976 and was a member of the First Quorum of the Seventy from 1976 to 1978. In 1978, he received general authority emeritus status. Born in Layton, Utah, Sill was a Mormon missionary in the southern United States from 1924 to 1926. From his book "How to Personally Profit From the Laws of Success," comes this brief biography of Sterling's life: