The 2021–22 Saint Peter's Peacocks men's basketball team represented Saint Peter's University in the 2021–22 NCAA Division I men's basketball season. The Peacocks, led by fourth-year head coach Shaheen Holloway, played their home games at the Run Baby Run Arena in Jersey City, New Jersey, as members of the Metro Atlantic Athletic Conference (MAAC). They finished the season 22–12, 14–6 in MAAC play, to finish in second place. They defeated Fairfield and Quinnipiac in the MAAC tournament, advancing to the championship game. There they defeated Monmouth to win the tournament championship. As a result, they received the conference's automatic bid to the NCAA tournament, for the first time since 2011, as the No. 15 seed in the East region.