The 2012–13 ACB season was the 30th season of the Spanish basketball league Liga ACB, also called Liga Endesa in its sponsored identity.

The regular season started on September 29, 2012 and ended on May 19, 2013.

FC Barcelona Regal were the defending champions, and Real Madrid took the 2013 title.

Asefa Estudiantes and Blancos de Rueda Valladolid remained in Liga ACB after Iberostar Canarias[1] and Menorca Bàsquet[2] resigned to promote.

Updated to games played on May 16, 2013Source: Liga ACBNotes:1: CB Canarias played previous season in LEB Oro