John Fullerton MacArthur Jr. (born June 19, 1939) is an American pastor and author who hosts the national Christian radio and television program Grace to You.[1] He has been the pastor of Grace Community Church, a nondenominational church in Sun Valley, California since February 9, 1969.[2] He is currently the chancellor emeritus of The Master's University in Santa Clarita and The Master's Seminary.

MacArthur is a proponent of expository preaching, and has been acknowledged by Christianity Today as one of the most influential preachers of his time.[3] MacArthur has written or edited more than 150 books. His MacArthur Study Bible has sold more than one million copies, receiving a Gold Medallion Book Award.[4]