The 2018 Western Michigan Broncos football team represented Western Michigan University (WMU) in the 2018 NCAA Division I FBS football season. They were led by second-year head coach Tim Lester and played their home games at Waldo Stadium as a member of the West Division of the Mid-American Conference. They finished the season 7–6, 5–3 in MAC play to finish in a three-way tie for second place in the West Division. They were invited to the Famous Idaho Potato Bowl where they lost to BYU.