The 2018 Metro Atlantic Athletic Conference men's basketball tournament was the postseason men's basketball tournament for the Metro Atlantic Athletic Conference for the 2017–18 NCAA Division I men's basketball season. It was held from March 1–5, 2018 at the Times Union Center in Albany, New York. No. 4 seed Iona defeated No. 6 seed Fairfield in the championship game to receive the conference's automatic bid to the NCAA tournament. This was Iona's third consecutive MAAC tournament championship, while also being their MAAC-record leading sixth straight championship game appearance.