The 2005St. Louis Rams season was the team's 68th year with the National Football League and the 11th season in St. Louis. They tried to improve on their previous output in which they won eight games. Instead, they collapsed and finished the season with a 6-10 record. From 2005 onwards the Rams collapsed and missed the playoffs.
The news broke on October 10 when head coach Mike Martz announced he was leaving the team indefinitely after being diagnosed with a bacterial infection. A day before that, he coached his last game in a home loss against Seattle. Joe Vitt took over the sidelines for the rest of the season. Though Martz was medically cleared to return, management refused to let him do so and he was fired the day after the final regular season game. Several players said they enjoyed having Martz as their head coach.
As second-year running back Steven Jackson earned the starting position, this year was the final season for future Hall of Famer Marshall Faulk. Although Faulk was on the roster the following season, he was unable to play due to reconstructive knee surgery.