The 2019–20 Indiana State Sycamores men's basketball team represented Indiana State University in the 2019–20 NCAA Division I men's basketball season. The Sycamores, led by 10th-year head coach Greg Lansing, played their home games at the Hulman Center in Terre Haute, Indiana as members of the Missouri Valley Conference. They finished the season 18–12, 11–7 in MVC play to finish in a tie for third place. They lost in the quarterfinals of the MVC tournament to Missouri State.