Alvin "Al" Mackling (born December 31, 1927) is a longtime Democratic Socialist and a retired lawyer. He was an alderman in the former city of St. James from 1961 to 1969 and was a member of the Legislative Assembly of Manitoba from 1969 to 1973 and from 1981 to 1988. He was a cabinet minister in the New Democratic Party governments of Edward Schreyer and Howard Pawley.