The 2011–12 Big Bash League season or BBL|01 was the inaugural season of the Big Bash League, the top-class franchise Twenty20 cricket competition in Australia.
The tournament replaced the KFC Twenty20 Big Bash, which ran each season from 2005–06 to 2010–11 featuring state teams.
The tournament was won by the Sydney Sixers, which defeated Perth Scorchers in the final at the WACA Ground on 28 January 2012.
David Hussey of the Melbourne Stars was named the player of the tournament, having scored 243 runs and taken eight wickets in eight matches.
The competition features eight city-based franchises, instead of the six state-based teams which had previously competed in the KFC Twenty20 Big Bash.