The 2019–20 St. John's Red Storm men's basketball team represented St. John's University during the 2019–20 NCAA Division I men's basketball season.

They were coached by Mike Anderson, in his first year at the school, and played their home games at Carnesecca Arena and Madison Square Garden as members of the Big East Conference.

9 seed in the Big East tournament, they defeated Georgetown in the first round[1] before having their quarterfinal game against Creighton canceled at halftime due to the ongoing coronavirus pandemic.

They defeated DePaul in the first round of the Big East tournament before losing to Marquette in the quarterfinals.

They received an at-large bid to the NCAA tournament where they lost in the first four to Arizona State.