Louis-Albert Vachon, CC OQ (February 4, 1912 – September 29, 2006) was a Canadian educator, cardinal of the Roman Catholic Church, and Archbishop of Quebec.

He taught philosophy at Université Laval from 1941 to 1947, then began studies at the Pontifical Athenaeum Angelicum in Rome, Italy, where he was awarded a doctorate degree in theology in 1949 with a dissertation entitled "La vertu d'espérance et le péché de présomption : leur nature et leur opposition mutuelle."

In that year he was nominated as Rector of the Grand Seminary of Quebec and vice-rector of the Université Laval.

In 1958 he was appointed Domestic Prelate of His Holiness under Pope John XXIII, a title that gave Vachon the rank and style of monsignor.

He received the red biretta and the title of San Paolo della Croce a Corviale on that day.