Alexander Campbell (12 September 1788 – 4 March 1866) was an Ulster Scots 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."

[1]: 111 Campbell was influenced by similar efforts in Scotland, in particular, by James and Robert Haldane, who emphasized their interpretation of 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.

Alexander Campbell was born 12 September 1788 near Ballymena, in the parish of Broughshane, County Antrim, Ireland.

[2]: 117–118  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.

[2]: 118  They continued to western Pennsylvania, where the senior Campbell was serving as a minister in Washington County on the frontier.

[6]: 83 After the death of Margaret in 1827, Campbell married again the next year, to Selina Huntington Bakewell on 31 July 1828; they had six children.

Campbell's only formal political service was as a delegate to the Virginia Constitutional Convention of 1829–1830, held in Richmond.

[10] He bought a press and built a small print shop in 1823, establishing what proved to be a successful publishing operation.

He was concerned that "Christian Baptist" – which he considered to be less appropriate than the biblical term "Disciples" – was becoming the de facto name of the group.

He also wanted the new journal to have a more positive tone, promoting reform and preparing the world for the millennium and the second coming of Christ.

John Walker, a Baptist preacher, at Mount Pleasant, Ohio, on baptism, and since then, regularly participated in debates.

William L. McCalla, a Presbyterian minister, on infant baptism; in April 1829, with Robert Owen on socialism and Christianity; in January 1837, with Archbishop of Cincinnati, John Baptist Purcell on Protestantism and Roman Catholicism; in September 1843, he defended the Restoration Movement in a debate with Rev.

[7]: 136, 138  His nephew Archibald Campbell (1833–1899) had already become an important abolitionist and Republican party leader, and as editor of the Wheeling Daily Intelligencer helped found what became the state of West Virginia.