In Mormonism, the restoration refers to a return of the authentic priesthood power, spiritual gifts, ordinances, living prophets and revelation of the primitive Church of Christ after a long period of apostasy. While in some contexts the term may also refer to the early history of Mormonism, in other contexts the term is used in a way to include the time that has elapsed from the church's earliest beginnings until the present day. Especially in the Church of Jesus Christ of Latter-day Saints "the restoration" is often used also as a term to encompass the corpus of religious messages from its general leaders down to the present.

Mormonism is the theology and religious tradition of the Latter Day Saint movement of Restorationist Christianity started by Joseph Smith in Western New York in the 1820s and 1830s. As a label, Mormonism has been applied to various aspects of the Latter Day Saint movement, although there has been a recent push from the Church of Jesus Christ of Latter-day Saints to distance themselves from this label. A historian, Sydney E. Ahlstrom, wrote in 1982 that, depending on the context, the term Mormonism could refer to “a sect, a mystery cult, a new religion, a church, a people, a nation, or an American subculture; indeed, at different times and places it is all of these."