The 1985–86 LSU Tigers basketball team represented Louisiana State University in the Southeastern Conference (SEC) during the 1985-86 NCAA Division I men's basketball season. It is best known for being the lowest seeded team (11th) in the NCAA tournament to reach the Final Four (later matched by George Mason in 2006, VCU in 2011, Loyola–Chicago in 2018, and UCLA in 2021). They remain the only 11 seed to beat the 1, 2, and 3 seeds in their region in the same tournament.