An addition to the team which won its fourth trophy in the Caribbean in May will be paceman Brett Lee who has recovered from the ankle injury which dashed his World Cup hopes. Fellow fast bowler Glenn McGrath has retired.
"It's fantastic to have Brett Lee back, fully fit and resuming his spot in the Australian side. He's back to training and raring to go," chair of the national selectors Andrew Hilditch said in a statement.
Hilditch said the panel had lengthy discussions on how to improve the team that won the World Cup.
"We looked at the performances of some of the top domestic Twenty20 players, but ultimately we felt that the World Cup winning side would adapt well and deserved the opportunity to prove that they can perform to the highest standards in both shorter forms of the game," he said.
Cricket Australia said the same squad, with the exception of Brad Haddin, would tour India.
Meanwhile, the Australia 'A' team to tour Pakistan was named with a view to the future of Australian cricket.
"We've taken the opportunity to take three spinners and also look at prominent all-rounders Andrew McDonald and James Hopes," Hilditch said.
Australia is scheduled to kick off its ICC World Twenty20 programme with a match against Zimbabwe in Cape Town on September 12. It will play England in Cape Town on September 14.
Australia's tour of India begins on September 25 while the Australia 'A' tour of Pakistan will begin September 1.
The Twenty20 squad: Ricky Ponting (captain), Adam Gilchrist (vice captain), Nathan Bracken, Stuart Clark, Michael Clarke, Brad Haddin, Matthew Hayden, Brad Hodge, Brad Hogg, Michael Hussey, Mitchell Johnson, Brett Lee, Andrew Symonds, Shaun Tait and Shane Watson.
The Australia squad: Ricky Ponting (captain), Adam Gilchrist (vice captain), Nathan Bracken, Stuart Clark, Michael Clarke, Matthew Hayden, Brad Hodge, Brad Hogg, Michael Hussey, Mitchell Johnson, Brett Lee, Andrew Symonds, Shaun Tait and Shane Watson.
The Australia 'A' squad: Adam Voges (captain), Cameron White (vice captain), Cullen Bailey, Doug Bollinger, Dan Cullen, Ben Hilfenhaus, James Hopes, David Hussey, Phil Jaques, Andrew McDonald, Stuart MacGill, Ashley Noffke, Chris Rogers and Luke Ronchi.