The 2017–18 Indiana State Sycamores basketball team represented Indiana State University during the 2017–18 NCAA Division I men's basketball season. The Sycamores, led by eighth-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 13–18, 8–10 in MVC play to finish in sixth place. They lost in the quarterfinals of the MVC tournament to Illinois State.