William Marks (November 15, 1792 – May 22, 1872) was a leader in the early days of the Latter Day Saint movement and was a member of the First Presidency in the Reorganized Church of Jesus Christ of Latter Day Saints. Marks is mentioned in the Doctrine and Covenants in sections 117 and 124 of the Church of Jesus Christ of Latter-day Saints (LDS Church) edition and in section 115 of the Community of Christ edition.