Church of Christ, the original church of the Latter Day Saint movement, is organized by Joseph Smith and others at either Fayette or Manchester, New York.

The Church of Christ was the original name of the Latter Day Saint church founded by Joseph Smith. Organized informally in 1829 in upstate New York and then formally on April 6, 1830, it was the first organization to implement the principles found in Smith's newly published Book of Mormon, and thus its establishment represents the formal beginning of the Latter Day Saint movement. Later names for this organization included the Church of the Latter Day Saints, the Church of Jesus Christ, the Church of God, the Church of Christ of Latter Day Saints, and the Church of Jesus Christ of Latter Day Saints.

The Latter Day Saint movement is the collection of independent church groups that trace their origins to a Christian Restorationist movement founded by Joseph Smith in the late 1820s.

April 6 is the date of the formal organization of The Church of Jesus Christ of Latter-day Saints in 1830. Rooted in Mormon scriptures, it was believed to have been chosen by divine authority. This date plays an important role in the theology and tradition of the church, commemorating its founding and also being proposed as the date of the birth of Jesus Christ. As an integral part of Mormon history, it holds symbolic significance for other denominations within the Latter-day Saint movement as well.

Joseph Smith Jr. was an American religious and political leader and the founder of Mormonism and the Latter Day Saint movement. Publishing the Book of Mormon at the age of 24, Smith attracted tens of thousands of followers by the time of his death fourteen years later. The religious movement he founded is followed by millions of global adherents and several churches, the largest of which is the Church of Jesus Christ of Latter-day Saints.