The 2021 Metro Atlantic Athletic Conference men's basketball tournament was the postseason men's basketball tournament for the Metro Atlantic Athletic Conference for the 2020–21 NCAA Division I men's basketball season. The tournament was played from March 8–13, 2021 at the Jim Whelan Boardwalk Hall in Atlantic City, New Jersey for the second year in a row. Since 2020's tournament was never fully completed, the defending champions were the 2018–19 Iona Gaels.