| Year: | 1984–85 |
| Record: | 21–13 |
| Sport: | Basketball |
| Conference: | Big Eight Conference |
| Short Conf: | Big Eight |
| Team: | Iowa State Cyclones |
| Head Coach: | Johnny Orr |
| Conf Record: | 7–7 |
| Hc Year: | 5th |
| Asst Coach1: | Steve Antrim |
| Asst Coach2: | Jim Hallihan |
| Stadium: | Hilton Coliseum |
| Tourney: | NCAA Tournament |
| Tourney Result: | First Round |
The 1984–85 Iowa State Cyclones men's basketball team represented Iowa State University during the 1984–85 NCAA Division I men's basketball season. The Cyclones were coached by Johnny Orr, who was in his 5th season. They played their home games at Hilton Coliseum in Ames, Iowa.
They finished the season 21–13, 7–7 in Big Eight play to finish in a tie for third place. The Cyclones advanced to the Big Eight tournament championship game against #4 Oklahoma, falling 73-71. They qualified for the NCAA Tournament as a 13 seed, falling in the first round to 4 seed Ohio State, 75-64.
|-!colspan=6 style=""|Exhibition
|-!colspan=6 style=""|Regular Season|-!colspan=6 style=""|Big Eight tournament|-!colspan=6 style=""|NCAA Tournament
|-[2]