John Tanner (August 15, 1778 – April 13, 1850) was a leading figure in The Church of Jesus Christ of Latter-day Saints and a chief financial backer of the Kirtland Temple.
Tanner was a Baptist until he joined the Church of Jesus Christ of Latter-day Saints in 1832.
Ten of his 14 children who lived to adulthood affiliated with the Church of Jesus Christ of Latter-day Saints and eventually moved to Utah Territory.
In late 1834, Tanner sold his property in and around Lake George, New York which included a hotel.
Tanner moved with the main body of the Church to Missouri, where he was on one occasion attacked as a result of mob and government persecution that led to the Saints fleeing the state.
His wife and the three youngest of his five children all died at the time that they joined the body of the Mormons in heading west.
His granddaughter Emily S. Tanner Richards was one of the main founders of the Utah Woman's Suffrage Association.