Health officials confirmed the cases of gonorrhoea – also called the clap – were found to be resistant to antibiotics in the last month.
And Australia is packed with both British tourists on their holidays along with more than 1.2 million expats from the UK.
One case was uncovered in Queensland, while the second was found in Western Australia.
Tourists were feared to be at risk after a UK man became the world’s first to be diagnosed with super gonorrhoea after a holiday in Asia.
Gonorrhoea is spread through all forms of sex and can leave women infertile if untreated.