The 2019–20 James Madison Dukes men's basketball team represented James Madison University during the 2019–20 NCAA Division I men's basketball season. The Dukes, led by fourth-year head coach Louis Rowe, played their home games at the James Madison University Convocation Center in Harrisonburg, Virginia as members of the Colonial Athletic Association. They finished the season 9–21, 2–16 in CAA play to finish in last place. They lost in the first round of the CAA tournament to Elon.