2003–04 Western Michigan Broncos men's basketball team

The 2003–04 Western Michigan Broncos men's basketball team represented Western Michigan University (WMU) during the 2003–04 NCAA Division I men's basketball season. The Broncos were Mid-American Conference (MAC) overall and West Division co-champions with Toledo, received the No. 1 seed in the conference tournament and defeated Toledo in the conference finals to receive the MAC's automatic berth into the 2014 NCAA Division I men's basketball tournament. WMU is led by 11th year head coach Steve Hawkins and play their home games at University Arena in Kalamazoo, Michigan.

WMU was given a No. 11 seed in the NCAA tournament and lost to No. 6 seeded Vanderbilt in the opening round, 71–59.

Schedule and results
!colspan=9 style=| Regular season

!colspan=9 style=| MAC tournament

!colspan=9 style=| NCAA tournament