Northern Irish pastor, author, and radio Bible teacher (1940–2020)
 
Alan G. Cairns (August 12, 1940 – November 5, 2020) was a Northern Irish pastor, author, and radio Bible teacher.
A native of Belfast, Northern Ireland, he joined the nascent Free Presbyterian Church of Ulster as a teenager. After being called to its ministry, he became a close associate of Ulster preacher-politician Ian Paisley. Cairns served as pastor of Free Presbyterian churches in Dunmurry and then Ballymoney. In 1973 he began a radio ministry, "Let the Bible Speak," which in 2020 was heard on stations in the UK, the Irish Republic, North America, India, Africa, Nepal, Iran and Afghanistan. 
In 1980, Cairns accepted a call to pastor Faith Free Presbyterian Church, Greenville, South Carolina, the first church in the United States to associate itself with the Ulster denomination. In Greenville, Cairns founded Geneva Reformed Seminary, which today serves as the seminary for the Free Presbyterian Church of North America.
Cairns adapted and published many of his sermon series as books and wrote a "Dictionary of Theological Terms" from a Reformed perspective. In 2007, Cairns became pastor emeritus, and in 2009, he retired to Ballymoney, where he died of COVID-19 in November 2020, at age 80.