The 2003 Pittsburgh Steelers season was the franchise's 71st season as a professional sports franchise and as a member of the National Football League. Their season began with the team trying to improve on their 10–5–1 record from 2002 in which they lost to the Tennessee Titans in the Divisional round of the playoffs. In his final season with the team, linebacker Jason Gildon became the franchise's career sack leader during a game against the Arizona Cardinals on November 9. As of 2021, this represents the most recent losing season for the Steelers.