The 1984–85 Purdue Boilermakers men's basketball team represented Purdue University during the 1984–85 college basketball season. Led by head coach Gene Keady, the team played their home games at Mackey Arena in West Lafayette, Indiana. The Boilermakers finished third in the Big Ten standings and received an at-large bid to the NCAA tournament as No. 6 seed in the Southeast Region. Purdue was upset in the opening round by Auburn, 59–58, to finish the season with a 20–9 record (11–7 Big Ten).