The 2011 Alabama Crimson Tide football team (variously "Alabama", "UA", "Bama" or "The Tide") represented the University of Alabama in the 2011 NCAA Division I FBS football season. It was the Crimson Tide's 117th overall and 78th season as a member of the Southeastern Conference (SEC) and its 20th within the SEC Western Division. The team was led by head coach Nick Saban, in his fifth year, and played their home games at Bryant–Denny Stadium in Tuscaloosa, Alabama. They finished the season with a record of twelve wins and one loss (12–1 overall, 7–1 in the SEC) and as consensus national champions.
After the completion of the 2010 season, the Crimson Tide signed a highly rated recruiting class in February 2011 and completed spring practice the following April. With seventeen returning starters from the previous season, Alabama entered their 2011 campaign ranked as the number two team in the nation and as a favorite to win the Western Division and compete for the SEC championship. However, Alabama lost to the LSU Tigers in their regular season matchup, and as a result did not qualify for the 2011 SEC Championship Game. Despite not winning their conference championship, when the final Bowl Championship Series rankings were released, Alabama had the number two ranking to qualify for the 2012 BCS National Championship Game. In the rematch against LSU, the Crimson Tide defeated the Tigers 21–0 to capture their second BCS Championship in three years.
At the conclusion of the season, the Alabama defense led the nation in every major statistical category, and was the first to do so since the 1986 season. Additionally, several players were recognized for the individual accomplishments on the field. Barrett Jones won both the Wuerffel Trophy and the Outland Trophy; and Trent Richardson won the Doak Walker Award, was a finalist for the Heisman Trophy and was named the SEC Offensive Player of the Year. Also, seven players were named to various All-America Teams with Dont'a Hightower being a consensus selection and Mark Barron, Jones and Richardson each being unanimous selections. In April 2012, eight members of the 2011 squad were selected in the NFL Draft, with an additional six signed as undrafted free agents to various teams.