The 2011–12 HockeyAllsvenskan season was the 7th season of HockeyAllsvenskan. The regular season started on 17 September 2011 and ended on 2 March 2012. The following Playoff round for the final spot in the 2012 Kvalserien started on 4 March and ended on 12 March 2012.
In the Playoff round, each team played a round-robin, facing each team twice – once at home and once on the road, giving a total of six games per team. The 4th seed from the regular season was awarded four extra points, the 5th seed three points, the 6th seed two points, and the 7th seed got one point. Rögle BK finished first and got the final spot in the 2012 Kvalserien qualification tournament for Elitserien.