The 2017–18 Western Michigan Broncos men's basketball team represented Western Michigan University during the 2017–18 NCAA Division I men's basketball season.

The Broncos, led by 15th-year head coach Steve Hawkins, played their home games at University Arena as members of the West Division of the Mid-American Conference.

8 seed in the MAC tournament, they lost in the first round of the conference tournament to Akron.

The Broncos finished the 2016–17 season 16–16, 11–7 in MAC play to tie for first in the West Division.

5 seed in the MAC tournament, they lost in the quarterfinals of the conference tournament to Ball State.