Mark Galli (b. August 24, 1952) is an American author and editor, and former Protestant minister. For seven years he was editor in chief of Christianity Today. Galli, a native of California, is a graduate of the University of California at Santa Cruz and holds a M.Div. from Fuller Theological Seminary. He was a Presbyterian pastor for ten years. Subsequently, he changed his denominational affiliation to the Anglican Church in North America. He converted to Catholicism in 2020.