The Reformed Presbyterian Church of Scotland is a small, Scottish, Presbyterian church denomination. Theologically they are similar to many other Presbyterian denominations in that their office-bearers subscribe to the Westminster Confession of Faith. In practice, they are more theologically conservative than most Scottish Presbyterians and maintain a very traditional form of worship. In 1690, after the Revolution, Alexander Shields joined the Church of Scotland, and was received along with two other ministers. These had previously ministered to a group of dissenters of the United Societies at a time when unlicensed meetings were outlawed. Unlike these ministers, some Presbyterians did not join the reconstituted Church of Scotland. From these roots the Reformed Presbyterian Church of Scotland was formed. It grew until there were congregations in several countries. In 1876 the majority of Reformed Presbyterians, or RPs, joined the Free Church of Scotland, and thus the present-day church, which remained outside this union, is a continuing church. There are currently Scottish RP congregations in Airdrie, Stranraer, Stornoway, Glasgow, and North Edinburgh. Internationally they form part of the Reformed Presbyterian Communion.

Presbyterianism is a Reformed (Calvinist) Protestant tradition named for its form of church government by representative assemblies of elders. Though there are other Reformed churches that are structurally similar, the word Presbyterian is applied to churches that trace their roots to the Church of Scotland or to English Dissenter groups that formed during the English Civil War.