The Western Australian Prison Officers’ Union (WAPOU) is a registered trade union founded in 1934 in Western Australia. The union represents employees within the prison services, including prison officers of Western Australia. The union is affiliated with the Australian Council of Trade Unions, UnionsWA and the Australian Labor Party (WA). The union is part of the Prison Officers of Australasia organisation, representing prison officers through the region. As of 2020 there are 2,721 registered members throughout the WA prison service in both private and public facilities.