| Sport: | basketball |
| Year: | 1988–89 |
| Team: | Missouri Tigers |
| Conference: | Big Eight Conference |
| Short Conf: | Big 8 |
| Coachrank: | 8 |
| Aprank: | 6 |
| Record: | 29–8 |
| Conf Record: | 10–4 |
| Head Coach: | Norm Stewart |
| Hc Year: | 22nd |
| Asst Coach1: | Bob Sundvold |
| Asst Coach2: | Rich Daly |
| Asst Coach3: | Sam Moore |
| Captain: | Mike Sandbothe |
| Captain2: | Greg Church |
| Arena: | Hearnes Center |
| Champion: | Big Eight tournament champions |
| Tourney: | NCAA tournament |
| Tourney Result: | Sweet Sixteen |
The 1988–89 Missouri Tigers men's basketball team represented the University of Missouri as a member of the Big Eight Conference during the 1988–89 NCAA men's basketball season. Led by head coach Norm Stewart, the Tigers finished second in the Big Eight regular season standings, won the Big Eight conference tournament, and were the No. 3 seed in the Midwest region of the NCAA tournament. The Tigers advanced to the Sweet Sixteen and finished with an overall record of 29–8 (10–4 Big Eight).
|-!colspan=9| Regular season|-!colspan=9| Big Eight Conference tournament|-!colspan=9| NCAA tournament[1]
See main article: 1988–89 NCAA Division I men's basketball rankings. ^Coaches did not release a Week 1 poll.