Alexander Campbell (12 September 1788 – 4 March 1866) was a Scots-Irish immigrant who became an ordained minister in the United States and joined his father Thomas Campbell as a leader of a reform effort that is historically known as the Restoration Movement, and by some as the "Stone-Campbell Movement." It resulted in the development of non-denominational Christian churches, which stressed reliance on scripture and few essentials. Campbell was influenced by similar efforts in Scotland, in particular, by James and Robert Haldane, who emphasized a return to original Christianity as found in the New Testament. In 1832, the group of reformers led by the Campbells merged with a similar movement that began under the leadership of Barton W. Stone in Kentucky. Their congregations identified as Disciples of Christ or Christian churches. Several American church groups have historical roots in the Campbells' efforts, including the Churches of Christ, the Christian churches and churches of Christ, and Evangelical Christian Church in Canada, the Christian Church (Disciples of Christ). Alexander Campbell founded Bethany College in Bethany, West Virginia.
Alexander Campbell was born 12 September 1788 near Ballymena, in the parish of Broughshane, County Antrim, Ireland. His parents were Thomas Campbell and Jane Corneigle Campbell, who were of Scots descent. Like his father, he was educated at the University of Glasgow, where he was greatly influenced by Scottish Enlightenment philosophy. He was also influenced by the English philosopher John Locke. At age 21, Alexander emigrated to the United States with his mother and siblings from Scotland, to join his father Thomas, who had emigrated there in 1807. They sailed from Scotland on the Latonia on 3 August 1809 and landed in New York City on 29 September, then traveled overland to Philadelphia. They continued to western Pennsylvania, where the senior Campbell was serving as a minister in Washington County on the frontier. Alexander was ordained by his father's Brush Run Church on 1 January 1812.