The 2019–20 Stony Brook Seawolves men's basketball team represented Stony Brook University in the 2019–20 NCAA Division I men's basketball season.

They played their home games at the Island Federal Credit Union Arena in Stony Brook, New York and were led by first-year head coach Geno Ford,[1] who took over for former head coach Jeff Boals, who left the school to accept the head coaching position at Ohio.

They defeated Albany in the quarterfinals of the America East tournament before losing in the semifinals to Hartford.

In the America East tournament, they were upset in the quarterfinals by Binghamton.

Note: Policelli was deemed ineligible for the 2019–20 season due to NCAA transfer regulations.