The 2011–12 ACB season is the 29th season of the Liga ACB, called also Liga Endesa due to sponsorship reasons.

[1] The regular season started on 8 October 2011 and ended on 6 May 2012.

Playoffs started on 17 May 2011 and ended on 16 June.

[2] FC Barcelona Regal won their 17th title, the second in a row.

1Caja Laboral plays at Iradier Arena during Fernando Buesa Arena extension to 15,000 seats.