The 2017–18 Northwestern Wildcats men's basketball team represented Northwestern University in the 2017–18 NCAA Division I men's basketball season. They were led by fifth-year head coach Chris Collins as members of the Big Ten Conference. They played their home games at Allstate Arena in Rosemont, Illinois while the university's Welsh-Ryan Arena, underwent renovations. A winning record in the Big Ten as well, a Round-of-32 NCAA appearance in 2016–17, and the return of all key offensive contributors led to big expectations for the 2017–18 season. But the Wildcats stumbled to a poor start, finishing the season with a disappointing 15–17 record, 6–12 in Big Ten play to finish in 10th place. They lost in the second round of the Big Ten tournament to Penn State.