Duncan Campbell (1898–1972) was a Scottish preacher and key figure in the Hebrides Revival, a powerful Christian awakening that swept the Scottish Hebrides in the late 1940s and early 1950s. A devout Presbyterian and member of the Faith Mission, Campbell was known for his passionate preaching, deep prayer life, and emphasis on holiness and repentance. He believed true revival came through brokenness, obedience, and the sovereign move of God. His ministry in places like the Isle of Lewis led to widespread spiritual transformation, marked by intense conviction, conversions, and renewed church life, often without any planned evangelistic campaigns.