The 2004 season was the Chicago Bears's 85th season in the National Football League (NFL). The team failed to improve on their 7–9 record from 2003 as they fell to a 5–11 record, under first-year head coach Lovie Smith. The team was once again in a quarterbacking carousel after the injury of starter Rex Grossman early on in the season. This was the team's eighth losing season in the past nine seasons.

The 2004 NFL season was the 85th regular season of the National Football League (NFL).