The 1984–85 St. John's Redmen basketball team represented St. John's University during the 1984–85 NCAA Division I men's basketball season. The team was coached by Lou Carnesecca in his seventeenth year at the school. Home games were played at Alumni Hall and Madison Square Garden and the team was a member of the Big East Conference. The team finished 31–4, with three of the four losses coming to Georgetown.