The 2004 Mountain West Conference football season was the sixth since eight former members of the Western Athletic Conference banded together to form the Mountain West Conference. It was the last season of the conference's original eight-team line up, as Texas Christian University (TCU) had agreed to join the conference for the 2005 season. The Utah won the conference championship in 2004, the Utes' third title since the league began in 1999. On the strength of their perfect 11–0 record in the regular season, Utah became the first team from a BCS non-AQ conference to be invited to a Bowl Championship Series (BCS) bowl when they accepted an invitation to play Pittsburgh in the Fiesta Bowl.

The 2004 Utah Utes football team represented the University of Utah in the 2004 NCAA Division I-A football season. This team was the original 'BCS Buster', meaning, this was the first time that a team from a BCS non-AQ conference was invited to play in one of the BCS bowl games. The team, coached by second-year head football coach Urban Meyer, played its home games in Rice-Eccles Stadium.