| Year: | 1990 |
| Conference: | Big Eight Conference |
| Division: | I |
| Gender: | Men's |
| Teams: | 8 |
| Finalarena: | Kemper Arena |
| Finalcity: | Kansas City, MO |
| Champions: | Oklahoma |
| Titlecount: | 4th |
| Coach: | Billy Tubbs |
| Coachcount: | 3rd |
| Mvp: | Shaun Vandiver |
| Mvpteam: | Colorado |
| Television: | Raycom Sports (Quarterfinals, Semi-Finals and Championship) ABC(Championship game) |
The 1990 Big Eight Conference men's basketball tournament was held March 9–11 at Kemper Arena in Kansas City, Missouri.[1]
Second-seeded Oklahoma defeated #8 seed in the championship game, 92–80, to earn the conference's automatic bid to the 1990 NCAA tournament.