| Year: | 1998 |
| Team: | Wyoming Cowboys |
| Conference: | Western Athletic Conference |
| Short Conf: | WAC |
| Record: | 8–3 |
| Conf Record: | 6–2 |
| Hc Year: | 2nd |
| Cooff Coach1: | Dave Warner |
| Cooc1 Year: | 1st |
| Cooc2 Year: | 1st as OC, 2nd overall |
| Dc Year: | 2nd |
| Stadium: | War Memorial Stadium (Capacity: 33,500) |
The 1998 Wyoming Cowboys football team represented the University of Wyoming in the 1998 NCAA Division I-A football season. The Cowboys were led by second-year head coach Dana Dimel and played their home games at War Memorial Stadium in Laramie, Wyoming. They finished the season with an 8–3 record overall and a 6–2 record in the Western Athletic Conference to finish 2nd in the Mountain Division. Despite a solid overall record, the Cowboys were not invited to play in a bowl game. This was Wyoming's last season in the WAC before they joined the Mountain West Conference.
See also: 1998 NCAA Division I-A football rankings.