Ivan Junius Barrett (April 4, 1910 – August 16, 1999) was an American author, professor, and historian of the Church of Jesus Christ of Latter-day Saints (LDS Church).
As a young man he served in the LDS Church's Central States Mission.
Barrett was a longtime employee of the Church Educational System filling many positions, including starting the first LDS Seminary in Nevada.
Barrett wrote Heroic Women of Mormondom; Major Lot Smith, Mormon Raider; Trumpet of God; Eph Hanks and Joseph Smith and the Restoration.
Barrett was a religion professor at Brigham Young University for 40 years, from 1953 to 1993.