Federal coalition MP Nicolle Flint says she will not recontest her South Australian seat of Boothby at the next election.
The second-term Liberal MP and deputy whip has been vocal about problems facing women in parliament, calling out what she described as sexist "rubbish" they too often faced.
"It has been an honour to represent the people of Boothby over two terms and I am grateful to them, and to my Liberal Party members, for giving me this opportunity," Ms Flint said in a statement.
"I will continue to work hard to serve my local community until the election."
Prime Minister Scott Morrison issued a statement on Friday night saying Ms Flint had been an "invaluable member of the Liberal team and my government".
"The public attention from being a parliamentarian does sometimes attract unacceptable behaviour, and I have admired Nicolle's efforts to stand against the bullying and nastiness of particular groups and individuals," Mr Morrison said.
"I wish her all the best for what comes next."
Greens Senator Sarah Hanson-Young issued a statement on Saturday urging all parties to unite to "change the sexism in parliament".
“It speaks volumes that a Government MP has decided to leave parliament because of the toxic culture and sexism in politics. Is it any surprise that after the past couple weeks women in the Morrison Government are quitting?" she said.
“We need more women, from all sides and all parties in politics if we are to change the sexism in parliament.
“It saddens me that another woman is now bowing out because of the boys club in Canberra.
“I wish Nicolle Flint all the best.
“As a proud member of the Boothby and South Australian community I want to see more women elected from across our state."
Ms Flint's Boothby electorate is held by a margin of 1.4 per cent.
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