The Leader of the Opposition in Tasmania is the title of the leader of the largest minority party in the state lower house, the Tasmanian House of Assembly. They act as the public face of the opposition, leads the opposition on the floor of parliament. They thus act as a chief critic of the government and ultimately attempt to portray the opposition as a feasible alternate government. They are also given certain additional rights under parliamentary standing orders, such as extended time limits for speeches. Should the opposition win an election, the Leader of the Opposition will usually be nominated to become the Premier of Tasmania.

Rebecca Peta White is an Australian politician. She has served as the 51st Leader of the Opposition in Tasmania and Leader of the Parliamentary Labor Party in Tasmania from July 2021 until April 2024, having previously served in that role from March 2017 until May 2021. She has been a member of the Tasmanian House of Assembly in the electorate of Lyons since the 2010 state election. Previously, White served as Shadow Minister for Health and Human Services, and Opposition Spokesperson for Children.