The 1998 Idaho Vandals football team represented the University of Idaho in the 1998 NCAA Division I-A football season. The Vandals, led by fourth-year head coach Chris Tormey, were members of the Big West Conference and played their home games at the Kibbie Dome, an indoor facility on campus in Moscow, Idaho.
The 1998 Idaho Vandals football team was formed after nineteen ninety nine.