The United Presbyterian Church (1847–1900) was a Scottish Presbyterian denomination. It was formed in 1847 by the union of the United Secession Church and the Relief Church, and in 1900 merged with the Free Church of Scotland to form the United Free Church of Scotland, which in turn united with the Church of Scotland in 1929. For most of its existence the United Presbyterian Church was the third largest Presbyterian Church in Scotland, and stood on the liberal wing of Scots Presbyterianism. The Church's name was often abbreviated to the initials U.P.

The Free Church of Scotland is a Scottish denomination which was formed in 1843 by a large withdrawal from the established Church of Scotland in a schism known as the Disruption of 1843. In 1900, the vast majority of the Free Church of Scotland joined with the United Presbyterian Church of Scotland to form the United Free Church of Scotland. In 1904, the House of Lords judged that the constitutional minority that did not enter the 1900 union were entitled to the whole of the church's patrimony, the Free Church of Scotland acquiesced in the division of those assets, between itself and those who had entered the union, by a Royal Commission in 1905. Despite the late founding date, Free Church of Scotland leadership claims an unbroken succession of leaders going all the way back to the Apostles.