Mark McGowan is an Australian former politician and naval officer who served as the 30th premier of Western Australia from 2017 until his retirement in 2023. He was the leader of the Western Australian branch of the Australian Labor Party (ALP) from 2012 to 2023 and a member of the Legislative Assembly (MLA) for the district of Rockingham from 1996 to 2023.

The premier of Western Australia is the head of government of the state of Western Australia. The role of premier at a state level is similar to the role of the prime minister of Australia at a federal level. The premier leads the executive branch of the Government of Western Australia and is accountable to the Parliament of Western Australia. The premier is appointed by the governor of Western Australia. By convention, the governor appoints as premier whoever has the support of the majority of the Western Australian Legislative Assembly, the lower house of the Parliament of Western Australia. In practice, this means that the premier is the leader of the political party or group of parties with a majority of seats in the Legislative Assembly. Since Western Australia achieved self-governance in 1890, there have been 31 premiers. Roger Cook is the current premier, having been appointed to the position on 8 June 2023.