The 2020–21 Seton Hall Pirates men's basketball team represented Seton Hall University in the 2020–21 NCAA Division I men's basketball season.

They were led by eleventh-year head coach Kevin Willard.

The Pirates played their home games at the Prudential Center in Newark, New Jersey and Walsh Gymnasium in South Orange, New Jersey as members of the Big East Conference.

5 seed in the Big East tournament, they defeated St. John's in the quarterfinals before losing to Georgetown in the semifinals.

However, the season ended due to the ongoing COVID-19 pandemic prior to playing a game in the Big East tournament, which was canceled during the first quarterfinal round game, following a campaign in which the Pirates were projected to receive an at-large bid to the also-canceled 2020 NCAA tournament regardless of how they fared in the Big East tournament.