Missouri Valley Conference men's basketball tournament

Missouri Valley Conference men's basketball tournament
Conference basketball championship
Sport	College basketball
Conference	Missouri Valley Conference
Number of teams	12
Format	Single-elimination tournament
Current stadium	Enterprise Center
Current location	St. Louis, Missouri
Played	1977–present
Last contest	2024
Current champion	Drake
Most championships	Creighton (12)
Official website	Missouri Valley Conference

The State Farm Missouri Valley Conference men's basketball tournament, commonly called Arch Madness, is an annual basketball tournament which features the men's basketball teams of each of the Missouri Valley Conference member universities. The tournament, held in St. Louis since 1991, determines which MVC team receives an automatic bid to the NCAA Division I men's basketball tournament. Arch Madness celebrated its 30th anniversary in 2020.

As of 2021, the tournament is the second longest running tournament (to the Big East men's basketball tournament) to be continuously held in one city. Although technically the BIG EAST did not conclude their 2020 tournament due to the COVID-19 pandemic the Valley has indicated it will not attempt to claim the longest running title due to the circumstances surrounding the pandemic.