| Year: | 1998 |
| Conference: | Midwestern Collegiate Conference |
| Division: | I |
| Gender: | Men's |
| Teams: | 8[1] |
| Arena: | Brown County Veterans Memorial Arena |
| City: | Green Bay, WI |
| Champions: | Butler |
| Coach: | Barry Collier |
| Coachcount: | 2nd |
| Mvp: | Jon Neuhouser, Butler[2] |
| Mvpteam: | Butler |
| Different Next: | 1999 |
The 1998 Midwestern Collegiate Conference men's basketball tournament took place at the end of the 1997–98 regular season. The tournament was hosted by Green Bay.
All Midwestern Collegiate Conference schools played in the tournament. Teams were seeded by 1997–98 Midwestern Collegiate Conference season record, with a tiebreaker system to seed teams with identical conference records.