Queensland Greens MP Amy McMahon has accused Robbie Katter of "gross discrimination" for threatening a move to ban transgender athletes from women's sport in the state.
The Katter's Australian Party MP on Friday threatened to introduce a bill to Queensland parliament if the next federal government doesn't implement a national ban within 90 days of forming.
Ms McMahon attacked Mr Katter over his comments, saying transgender Queenslanders are already subjected to widespread discrimination, hate and even violence on a daily basis.
"This kind of gross discrimination is what we've come to expect from parties that have run out of ideas and have lost touch," the South Brisbane MP told AAP on Sunday.
"Sport is for everyone. If we want to be a country that includes everyone, then everyone should be able to participate in sport, including trans and gender diverse people."
A legislative ban is unlikely with Queensland's majority Labor government generally supportive of transgender rights.
Education Minister Grace Grace has a non-binary child and has previously spoken out against discrimination.
Attorney-General Shannon Fentiman is also drafting a bill to make it easier for people to change their sex on birth, death and marriage certificates to reflect their chosen gender identity.
Comment has been sought from the government and the state's Liberal National Party opposition.
On Friday, Mr Katter said sport in Australia was going down a "woke and corrosive path" and he was concerned female athletes were currently at greater risk of injuries when playing contact sports.
He also said transgender women could have possible "competitive advantages" over other female athletes.
The Katter threat comes amid controversy about transphobic comments by Prime Minister Scott Morrison's hand-picked candidate for the federal seat of Warringah in Sydney's north.
The candidate, Katherine Deves, has apologised for her comments but avoided media appearances.
Mr Morrison has expressed support for her call to exclude transgender athletes from women's competitions, with federal Labor leader Anthony Albanese indicating a similar position.
Victorian Premier Daniel Andrews on Sunday weighed in on the subject, suggesting the debate was being driven by desperate politicians and was harmful to trans children and their parents.
