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.

The premier of Tasmania is the head of the executive government in the Australian state of Tasmania. By convention, the leader of the party or political grouping which has majority support in the House of Assembly is invited by the governor of Tasmania to be premier and principal adviser.