The 2017–18 Illinois State Redbirds men's basketball team represented Illinois State University during the 2017–18 NCAA Division I men's basketball season. The Redbirds, led by sixth-year head coach Dan Muller, played their home games at Redbird Arena in Normal, Illinois as a member of the Missouri Valley Conference. They finished the season 18–15, 10–8 in conference play, to finish in a tie for the third place. As the number three seed in the MVC tournament, they defeated Missouri State in their quarterfinal game and Southern Illinois in their semifinal game before being beaten by Loyola–Chicago in the final.