The 2017–18 Wisconsin Badgers men's basketball team represented the University of Wisconsin–Madison in the 2017–18 NCAA Division I men's basketball season. The Badgers were led by third-year head coach Greg Gard and played their home games at the Kohl Center as members of the Big Ten Conference. They finished the season 15–18, 7–11 in Big Ten play to finish in ninth place. They defeated Maryland in the second round of the Big Ten tournament before losing to Michigan State in the quarterfinals. The Badgers failed to make the NCAA tournament for the first time since 1998, ending their streak at 19 years.