The South Australian Liberal Party, officially known as the Liberal Party of Australia (South Australian Division), and often shortened to SA Liberals, is the South Australian Division of the Liberal Party of Australia. It was formed as the Liberal and Country League (LCL) in 1932 and became the South Australian Division of the Liberal Party when the Liberal Party was formed in 1945. It retained its Liberal and Country League name before changing to its current name in 1974. It is one of two major parties in the bicameral Parliament of South Australia, the other being the Australian Labor Party (SA Branch). The party has been led by Leader of the Opposition David Speirs since the 2022 state election after a one-term government.

The Parliament of South Australia is the bicameral legislature of the Australian state of South Australia. It consists of the 47-seat House of Assembly and the 22-seat Legislative Council. General elections are held every 4 years, with all of the lower house and half of the upper house filled at each election. It follows a Westminster system of parliamentary government with the executive branch required to both sit in parliament and hold the confidence of the House of Assembly. The parliament is based at Parliament House on North Terrace in the state capital of Adelaide.