Scott Morrison has rejected "deeply offensive" suggestions he has any links to the QAnon conspiracy theory.
The prime minister hit out at the ABC and Four Corners for "poor form" in trying to tie him or his family to the movement.
"I find it deeply offensive there would be any suggestion I would have any involvement or support for such a dangerous organisation. I clearly do not," he told reporters in Canberra on Friday.
"It is just also disappointing that Four Corners in their inquiries would seek to cast this aspersion, not just against me but by members of my own family.
"I just think that is really poor form."
The Four Corners episode was delayed by management this week.