William H. Clayton (July 17, 1814 – December 4, 1879) was a clerk, scribe, and friend to the religious leader Joseph Smith. Clayton, born in England, was also an American pioneer journalist, inventor, lyricist, and musician. He joined the Church of Jesus Christ of Latter Day Saints in 1837 and served as the second counselor to the British mission president Joseph Fielding while proselyting in Manchester. He led a group of British converts in emigrating to the United States in 1840 and eventually settled in Nauvoo, Illinois, where he befriended Joseph Smith and became his clerk and scribe. He was a member of the Council of Fifty and Smith's private prayer circle.