Deb Frecklington will lead the LNP in Queensland following the party's defeat at the November 25 election.
Emerging from a party room meeting on Tuesday afternoon, opposition whip Trevor Watts announced Ms Frecklington won the vote against contender John-Paul Langbroek.
Tim Mander will be the LNP's deputy leader.
The party was yet to reveal by how many votes Ms Frecklington and Mr Mander won.
Former leader Tim Nicholls announced he would not recontest the leadership, after it was confirmed Labor won majority government with 48 seats, while the LNP had 39.
Member for Oodgeroo Mark Robinson, who called himself the "underdog", also unsuccessfully challenged for leader, while Jason Costigan lost the vote to be deputy leader.
Ms Frecklington walked into the meeting flanked by 11 MPs, including deputy hopeful Mr Mander, Mr Nicholls, Ros Bates, and Andrew Powell, while Mr Langbroek entered the room with just one, Mark McArdle.
Earlier in the day, Labor's new cabinet was sworn in at Government House.
Meanwhile, Steve Dickson, who lost his seat of Buderim, confirmed he would remain the Queensland leader of One Nation from outside the Parliament.
His duties will include supporting the party's solitary MP, member for Mirani Stephen Andrew, and preparing for the next Queensland election.
- This story first appeared on The Brisbane Times.