The Institute of Public Affairs (IPA) is a conservative non-profit free market public policy think tank based in Melbourne, Victoria, Australia. It advocates free market economic policies such as free markets, privatisation, deregulation of state-owned enterprises, trade liberalisation, deregulation of workplaces, abolition of the minimum wage, criticism of socialism, and repeal of Section 18C of the Racial Discrimination Act 1975. It also rejects large parts of climate science.