The Book of Mormon is a religious text of the Latter Day Saint movement, which, according to Latter Day Saint theology, contains writings of ancient prophets who lived on the American continent from 600 BC to AD 421 and during an interlude dated by the text to the unspecified time of the Tower of Babel. It was first published in March 1830 by Joseph Smith as The Book of Mormon: An Account Written by the Hand of Mormon upon Plates Taken from the Plates of Nephi. The Book of Mormon is one of the standard works of the Latter Day Saint movement and one of the movement's earliest unique writings. The denominations of the Latter Day Saint movement typically regard the text primarily as scripture, and secondarily as a record of God's dealings with ancient inhabitants of the Americas. The majority of Latter Day Saints believe the book to be a record of real-world history, and many Mormon academics and apologetic organizations strive to affirm the book as historically authentic through their scholarship and research, but mainstream archaeological, historical and scientific communities do not consider the Book of Mormon to be a record of historical events.According to Smith's account and the book's narrative, the Book of Mormon was originally written in otherwise unknown characters referred to as "reformed Egyptian" engraved on golden plates. Smith said that the last prophet to contribute to the book, a man named Moroni, buried it in the Hill Cumorah in present-day Manchester, New York, before his death, and then appeared in a vision to Smith in 1827 as an angel, revealing the location of the plates, and instructing him to translate the plates into English. Most naturalistic views on Book of Mormon origins hold that Smith authored it, whether consciously or subconsciously, drawing on material and ideas from his contemporary 19th-century environment, rather than translating an ancient record.The Book of Mormon has a number of doctrinal discussions on subjects such as the fall of Adam and Eve, the nature of the Christian atonement, eschatology, agency, priesthood authority, redemption from physical and spiritual death, the nature and conduct of baptism, the age of accountability, the purpose and practice of communion, personalized revelation, economic justice, the anthropomorphic and personal nature of God, the nature of spirits and angels, and the organization of the latter day church. The pivotal event of the book is an appearance of Jesus Christ in the Americas shortly after his resurrection. Common teachings of the Latter Day Saint movement hold that the Book of Mormon fulfills numerous biblical prophecies by ending a global apostasy and signaling a restoration of Christian gospel. The book can also be read as a critique of Western society and contains passages condemning immorality, individualism, social inequality, ethnic injustice, nationalism, and the rejection of God, revelation, and miraculous religion.The Book of Mormon is divided into smaller books, titled after individuals named as primary authors or other caretakers of the ancient record the Book of Mormon describes itself as and, in most versions, is divided into chapters and verses. Its English text imitates the style of the King James Version of the Bible, and its grammar and word choice reflect Early Modern English. The Book of Mormon has been fully or partially translated into at least 112 languages.

Joseph Smith Jr. (December 23, 1805 – June 27, 1844) was an American religious leader and founder of Mormonism and the Latter Day Saint movement. When he was 24, Smith published the Book of Mormon. By the time of his death, 14 years later, he had attracted tens of thousands of followers and founded a religion that continues to the present with millions of global adherents.

Smith was born in Sharon, Vermont. By 1817, he had moved with his family to Western New York, the site of intense religious revivalism during the Second Great Awakening. Smith said he experienced a series of visions, including one in 1820 during which he saw "two personages" (whom he eventually described as God the Father and Jesus Christ), and another in 1823 in which an angel directed him to a buried book of golden plates inscribed with a Judeo-Christian history of an ancient American civilization. In 1830, Smith published what he said was an English translation of these plates called the Book of Mormon. The same year he organized the Church of Christ, calling it a restoration of the early Christian church. Members of the church were later called "Latter Day Saints" or "Mormons", and Smith announced a revelation in 1838 that renamed the church as The Church of Jesus Christ of Latter Day Saints.

In 1831, Smith and his followers moved west, planning to build a communal American Zion. They first gathered in Kirtland, Ohio, and established an outpost in Independence, Missouri, which was intended to be Zion's "center place". During the 1830s, Smith sent out missionaries, published revelations, and supervised construction of the Kirtland Temple. Because of the collapse of the church-sponsored Kirtland Safety Society Anti-Banking Company, violent skirmishes with non-Mormon Missourians, and the Mormon extermination order, Smith and his followers established a new settlement at Nauvoo, Illinois, where he became a spiritual and political leader. In 1844, when the Nauvoo Expositor criticized Smith's power and practice of polygamy, Smith and the Nauvoo city council ordered the destruction of their printing press, inflaming anti-Mormon sentiment. Fearing an invasion of Nauvoo, Smith rode to Carthage, Illinois, to stand trial, but he was killed when a mob stormed the jailhouse.

Smith published many revelations and other texts that his followers regard as scripture. His teachings discuss the nature of God, cosmology, family structures, political organization, and religious collectivism. His followers regard him as a prophet comparable to Moses and Elijah. Several religious denominations identify as the continuation of the church that he organized, including The Church of Jesus Christ of Latter-day Saints and the Community of Christ.