Marcus Helvécio Martins (born 22 April 1959) is the former dean and department chair for religious education at Brigham Young University–Hawaii (BYU–Hawaii), and also the author of Setting the Record Straight: Blacks and the Mormon Priesthood. Martins was the first black member to serve as a missionary after the revelation extending the priesthood of the Church of Jesus Christ of Latter-day Saints (LDS Church) to all male members regardless of race or color. Martins is the son of Helvécio Martins, the first Latter-day Saint of African descent to serve as an LDS Church general authority.