The 2019–20 Seton Hall Pirates men's basketball team represented Seton Hall University in the 2019–20 NCAA Division I men's basketball season.

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.

They finished the season 21–9, 13–5 in Big East play, which put them in a three-way tie for first place.

3 seed in the Big East tournament, they were slated to play Marquette in the quarterfinals, but the Tournament was cancelled due to the COVID-19 pandemic, along with the rest of the NCAA postseason.

In the Big East tournament, they defeated Georgetown in the quarterfinals and Marquette in the semifinals before losing to Villanova by two points in the final.