| Hc Year: | 9th |
| Mode: | Basketball |
| Year: | 1984–85 |
| Team: | Michigan State Spartans |
| Conference: | Big Ten Conference |
| Captain2: | Richard Mudd |
| Short Conf: | Big Ten |
| Record: | 19–10 |
| Conf Record: | 10–8 |
| Coachrank: | 20 |
| Asst Coach3: | Herb Williams |
| Champion: | Spartan Cutlass Classic champions |
| Bowl Result: | First Round |
The 1984–85 Michigan State Spartans men's basketball team represented Michigan State University in the 1984–85 NCAA Division I men's basketball season. The team played their home games at Jenison Field House in East Lansing, Michigan and were members of the Big Ten Conference. They were coached by Jud Heathcote in his ninth year at Michigan State. The Spartans finished with a record of 19–10, 10–8 in Big Ten play to finish in fifth place. They received an at-large bid to the newly-expanded, 64-team NCAA tournament as the No. 10 seed in the Midwest region. It marked the school's first trip to the NCAA tournament since 1979 when they won the championship. There they lost to UAB in the First Round.
The Spartans finished the 1983–84 season with a record of 15–13, 8–10 to finish in a tie for fifth place in Big Ten play.
| - | 1984–85 Michigan State Spartans men's basketball team | ||||||
|---|---|---|---|---|---|---|---|
| No | Name | Pos | Year | Height | Pts | Reb | Ast |
| 11 | Sam Vincent | G | SR | 6–2 | 23.0 | 3.9 | 4.0 |
| 4 | Scott Skiles | G | JR | 6–1 | 17.7 | 3.2 | 5.8 |
| 00 | Ken Johnson | C | SR | 6–8 | 10.8 | 10.2 | 0.6 |
| 35 | Larry Polec | F | SR | 6–8 | 8.7 | 4.4 | 1.0 |
| 13 | Darryl Johnson | G | SO | 6–2 | 5.3 | 1.7 | 1.3 |
| 24 | Richard Mudd | F | SR | 6–9 | 3.9 | 5.5 | 0.3 |
| 15 | Ralph Walker | F | JR | 6–8 | 2.3 | 1.4 | 0.4 |
| 45 | Carlton Valentine | F | FR | 6–6 | 1.6 | 1.2 | 0.0 |
| 40 | Barry Fordham | F | SO | 6–8 | 1.1 | 0.6 | 0.1 |
| 21 | Greg Pedro | G | SO | 6–4 | 1.0 | 0.6 | 0.5 |
| 20 | Greg Vanek | F | JR | 6–6 | 0.3 | 0.2 | 0.0 |
|-!colspan=9 style=| Non-conference regular season|-!colspan=9 style=| Big 10 regular season|-!colspan=9 style=|NCAA Tournament