Warner "William" McCary (c. 1811 – after 1854) was an African American convert to Mormonism who was expelled from The Church of Jesus Christ of Latter-day Saints (LDS Church) in 1847 for claiming to be a prophet. Some researchers have suggested that McCary's actions led to the LDS Church's subsequent policy of not allowing people of black African descent to hold the priesthood or participate in temple ordinances.