The KFC Twenty20 Big Bash was a domestic Twenty20 cricket competition in Australia.

The competition was organised by Cricket Australia, and sponsored by fast food chicken outlet KFC.

Running over six seasons from 2005–06 to 2010–11, the Twenty20 Big Bash was the first top level domestic Twenty20 competition in Australia, contested by the six traditional Sheffield Shield state cricket teams.

The competition was replaced by the franchise-based Big Bash League from 2011–12.

Victoria was the most successful team during the tournament's running, winning four out of the six titles.