John Greer (1948–) is a Northern Irish preacher and pastor whose ministry within the Free Presbyterian Church of Ulster has emphasized fundamentalist theology and biblical exposition for over four decades. Born in County Antrim, Northern Ireland, he grew up in a Protestant community and came to faith through the influence of evangelical preaching, though specific details of his early life and conversion remain limited. Educated at the Free Presbyterian Theological Hall, he was ordained in 1972 and began serving as minister of Ballymena Free Presbyterian Church in County Antrim, a role he has maintained into 2025. Married with a family—specifics unpublicized—he has balanced pastoral duties with a commitment to preaching, often focusing on salvation, sanctification, and the authority of Scripture. Greer’s ministry has centered on Ballymena, where his sermons—available through platforms like SermonAudio—address topics ranging from Old Testament figures like Manasseh to warnings against secularism, delivered in a straightforward, uncompromising style typical of Free Presbyterianism. Beyond his local pulpit, he has preached at special meetings, such as a 2014 series at Lisburn Free Presbyterian Church on “Outstanding Men of God in the Old Testament,” and contributed to the denomination’s broader mission, including roles as clerk of the Presbytery and treasurer of the Whitefield College of the Bible. While not a global figure, his influence within Northern Ireland’s fundamentalist circles is notable, marked by a legacy of steadfastness and a focus on preparing believers for eternity, still active as of 2025.