The 2020–21 Fairleigh Dickinson Knights men's basketball team represented Fairleigh Dickinson University in the 2020–21 NCAA Division I men's basketball season. The Knights, led by eighth-year head coach Greg Herenda, will play their home games at the Rothman Center in Hackensack, New Jersey as members of the Northeast Conference. In a season limited due to the ongoing COVID-19 pandemic, the Knights finished the season 9–15, 8–10 in NEC play to finish eighth place. They failed to qualify for the NEC tournament.