The James Madison Dukes men's basketball team is the intercollegiate men's basketball program representing James Madison University in Harrisonburg, Virginia. The school, a member of Division I of the National Collegiate Athletic Association, joined the Sun Belt Conference on July 1, 2022 after having been a member of the Colonial Athletic Association since that league's establishment in 1979. The Dukes are led by head coach Mark Byington. The Dukes play their home games at the on-campus Atlantic Union Bank Center which seats 8,500 fans and opened in November 2020.