| Mode: | basketball |
| Year: | 1984-85 |
| Team: | Purdue Boilermakers |
| Conference: | Big Ten Conference |
| Short Conf: | Big Ten |
| Record: | 20–9 |
| Conf Record: | 11–7 |
| Head Coach: | Gene Keady |
| Hc Year: | 5th |
| Asst Coach1: | Bruce Weber |
| Ac1 Year: | 5th |
| Asst Coach2: | Kevin Stallings |
| Ac2 Year: | 3rd |
| Stadium: | Mackey Arena |
| Tourney: | NCAA tournament |
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).
|-!colspan=9 style=| Non-Conference Regular Season|-!colspan=9 style=| Big Ten Regular Season|-!colspan=9 style=|NCAA Tournament[1]
See main article: 1984–85 NCAA Division I men's basketball rankings. [2]