| Sport: | basketball |
| Year: | 1998–99 |
| Prev Year: | 1997–98 |
| Next Year: | 1999–2000 |
| Team: | Missouri Tigers |
| Conference: | Big 12 Conference |
| Short Conf: | Big 12 |
| Record: | 20–9 |
| Conf Record: | 11–5 |
| Head Coach: | Norm Stewart |
| Hc Year: | 32nd |
| Asst Coach1: | Kim Anderson |
| Ac1 Year: | 11th |
| Asst Coach2: | Rich Daly |
| Ac2 Year: | 16th |
| Captain: | John Woods |
| Captain2: | Monte Hardge |
| Arena: | Hearnes Center |
| Tourney: | NCAA tournament |
| Tourney Result: | First round |
The 1998–99 Missouri Tigers men's basketball team represented the University of Missouri during the 1998–99 NCAA men's college basketball season. The Tigers were led by legendary coach Norm Stewart in his 32nd and final season at the school.
|-!colspan=9 style=| Regular Season|-!colspan=9 style=| Big 12 Tournament|-!colspan=9 style=| NCAA Tournament