The Church of Scotland (CoS; Scots: The Kirk o Scotland; Scottish Gaelic: Eaglais na h-Alba) is a Presbyterian denomination of Christianity that holds the status of the national church in Scotland. It is one of the country's largest, having 259,200 members in 2023. While active membership in the church has declined significantly in recent decades (in 1982 it had nearly 920,000 members), the government Scottish Household Survey found that 20% of the Scottish population, or over one million people, identified the Church of Scotland as their religious identity in 2019. The Church of Scotland's governing system is presbyterian in its approach, therefore, no one individual or group within the church has more or less influence over church matters. There is no one person who acts as the head of faith, as the church believes that role is the "Lord God's". As a proper noun, the Kirk is an informal name for the Church of Scotland used in the media and by the church itself.
The Church of Scotland was principally shaped by John Knox in the Reformation of 1560 when it split from the Catholic Church and established itself as a church in the Reformed tradition. The church belongs to the Presbyterian tradition of Reformed Christianity (Calvinism), having no head of faith or leadership group and believing that God invited the church's adherents to worship Jesus.
The Church of Scotland celebrates two sacraments, Baptism and the Lord's Supper, as well as five other ordinances, such as Confirmation and Matrimony. The church adheres to the Bible and the Westminster Confession of Faith and is a member of the World Communion of Reformed Churches. The annual meeting of the church's general assembly is chaired by the Moderator of the General Assembly of the Church of Scotland.