The Holiness movement is a Christian movement that emerged chiefly within 19th-century Methodism, and to a lesser extent influenced other traditions such as Quakerism, Anabaptism, and Restorationism. The movement is historically distinguished by its emphasis on the doctrine of a second work of grace, which is called entire sanctification or Christian perfection. Churches aligned with the holiness movement additionally teach that the Christian life should be free of sin. For the Holiness movement, "the term 'perfection' signifies completeness of Christian character; its freedom from all sin, and possession of all the graces of the Spirit, complete in kind." A number of evangelical Christian denominations, parachurch organizations, and movements emphasize those beliefs as central doctrine.

Methodism, also called the Methodist movement, is a Protestant Christian tradition whose origins, doctrine and practice derive from the life and teachings of John Wesley. George Whitefield and John's brother Charles Wesley were also significant early leaders in the movement. They were named Methodists for "the methodical way in which they carried out their Christian faith". Methodism originated as a revival movement within Anglicanism originating out of the Church of England in the 18th century and became a separate denomination after Wesley's death. The movement spread throughout the British Empire, the United States and beyond because of vigorous missionary work, and today has about 80 million adherents worldwide.