| Sport: | football |
| Year: | 1998 |
| Team: | Boise State Broncos |
| Conference: | Big West Conference |
| Short Conf: | Big West |
| Record: | 6–5 |
| Conf Record: | 2–3 |
| Hc Year: | 1st |
| Oc Year: | 1st |
| Dc Year: | 1st |
The 1998 Boise State Broncos football team represented Boise State University in the 1998 NCAA Division I-A football season. The Broncos competed in the Big West Conference and played their home games on campus at Bronco Stadium in Boise, Idaho. Led by first-year head coach Dirk Koetter, Boise State was overall and in conference play.