Mormons are a religious and cultural group related to Mormonism, the principal branch of the Latter Day Saint movement of Restorationist Christianity, which began with Joseph Smith in upstate New York during the 1820s. After Smith's death in 1844, the Mormons followed Brigham Young to what would become the Utah Territory. Today, most Mormons are understood to be members of The Church of Jesus Christ of Latter-day Saints (LDS Church). Some Mormons are also either independent or non-practicing. The center of Mormon cultural influence is in Utah, and North America has more Mormons than any other continent, though the majority of Mormons live outside the United States.

The Church of Jesus Christ of Latter-day Saints (the LDS Church or, informally, the Mormon Church) is a Christian restorationist church that is considered by its followers to be the restoration of the original church founded by Jesus Christ. The church is headquartered in Salt Lake City, Utah, and has established congregations (called wards or branches) and built temples worldwide. According to the church, it has over 85,000 missionaries and a membership of over 15 million. It is ranked by the National Council of Churches as the fourth-largest Christian denomination in the United States. It is the largest denomination in the Latter Day Saint movement founded by Joseph Smith during the period of religious revival known as the Second Great Awakening.