Australia is run by the Australian Government, which is led by the Prime Minister.
As of September 2013, Tony Abbott is Australia's Prime Minister.
Queensland is a state of Australia and therefore does not have a president. Australia also does not have a president, but a Prime Minister, who in 2014 is Tony Abbott. The leader of government in Queensland is the premier. In 2014, this Is Campbell Newman.
Governor In Australia, the leader of the state government is the Premier.
In 2012, the leader of the Australian government is Julia Gillard, the Prime Minister.
The state leader of Western Australia is Colin Barnett, the current Premier, who was sworn in on 23 September 2008.
Australia does not have a President. Australia's leader of government is the Prime Minister who, in 2008, is Mr Kevin Rudd.
In Australia, the leader of the Opposition in 2011 is Tony Abbott, of the Liberal party.
The leader of the government in Australia is the Prime Minister.
From your question I take it that you are asking who is the political leader of Australia. At federal level the Prime Minister is the political leader who is responsible for leading the government, and as such they are the 'Chief Executive' of Australia if you like. The incumbent Prime Minister of Australia, at the time of writing this answer, is The Honourable Julia Gillard leader of the Australian Labor Party.
Total taxation revenue for the government of Australia was $445,965min 2014-15.
The members of the local councils the members of the state government. the members and senators of the federal government.
The first Prime Minister of Australia Edmund Barton was elected in 1901. He was leader of the federal Protectionist Party.
Australia does not have a president, and never has had a president. The Australian government is led by the Prime Minister who, in 2014, is the Hon. Tony Abbott.