| Year: | 1990 |
| Conference: | Atlantic 10 |
| Division: | I |
| Gender: | Men's |
| Teams: | 10 |
| Arena: | The Palestra Philadelphia and McGonigle Hall |
| City: | Philadelphia |
| Champions: | Temple |
| Titlecount: | 4th |
| Coach: | John Chaney |
| Coachcount: | 4th |
| Mvp: | Mark Macon |
| Mvpteam: | Temple |
The 1990 Atlantic 10 men's basketball tournament was held as the conclusion to the 1989-90 Atlantic 10 Conference collegiate men's basketball season.
First Round, Quarterfinals, and Semifinals were held on consecutive days from March 3 to March 5, 1990, at the Palestra in Philadelphia, Pennsylvania.[1]
Finals were held on March 8, 1990, at McGonigle Hall in Philadelphia, in which the Temple Owls beat the Massachusetts Minutemen by a two point margin to win the Tournament on home ground.
Temple was the only team to receive an automatic bid to the 1990 NCAA Men's Division I Basketball Tournament. The top six teams in the conference received first-round byes.
Although Tournament champions and overall season champions are awarded separately, in the 1989-90 season the Temple Owls won both.
The Atlantic 10 Conference tournament finals have only ever been won by a margin of two points one other time, when the Saint Louis Billikens beat the St. Bonaventure Bonnies in 2019.[3]