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, who took over for former head coach Jeff Boals, who left the school to accept the head coaching position at Ohio. They are members of the America East Conference. They finished the season 20–13, 10–6 in America East play to finish in second place. They defeated Albany in the quarterfinals of the America East tournament before losing in the semifinals to Hartford.