The 2019–20 UMass Lowell River Hawks men's basketball team represented the University of Massachusetts Lowell in the 2019–20 NCAA Division I men's basketball season. They split their home games between the Costello Athletic Center and the Tsongas Center, both of which are located in Lowell, Massachusetts, and were led by seventh-year head coach Pat Duquette. They finished the season 13–19, 7–9 in America East play to finish in a tie for sixth place. They lost in the quarterfinals of the America East tournament to Hartford.