Federal Independent MP Andrew Wilkie says he will introduce a private member's bill on whistleblowing if the Federal Government does not pass legislation by the end of August.

A new Griffith University survey shows 81 per cent of adult Australians believe whistleblowers should be supported rather than punished for revealing serious wrongdoings.

Mr Wilkie says every state has whistleblower protection laws and it is time the Federal Government followed suit.

"I'll give the Government three more months. If at the end of August the Government is not making real progress on whistleblower legislation, if I'm not confident that it's going to be through the Parliament before the next election, then I will move a private member's bill on public interest disclosure legislation."