Australia–United States relations

Australia and the United States became close allies in World War II, when the U.S. came to the rescue after the failure of the British in Asia left Australia in fear of an imminent Japanese invasion. Since then there has been a robust relationship underpinned by shared democratic values, common interests, and cultural affinities. At the governmental level, relations between Australia and the United States are formalized by the ANZUS security agreement, the AUKUS security partnership and the Australia–United States Free Trade Agreement (AUSFTA). They were formally allied together in both World War I and World War II, the Korean War, the Vietnam War, the Gulf War, and the war on terror, although they had disagreements at the 1919–1920 Paris Peace Conference. Australia is a major non-NATO ally of the United States, and the two nations have held an annual meeting, the Australia–United States Ministerial Consultation, with one another most years since 1985.

The United States and Australia share some common ancestry and history, having both been British colonies. Both countries have indigenous peoples (Native Americans in the United States and Aboriginal Australians), who were dispossessed of their land by the process of colonization. Both states have also been part of a Western alliance of states in various wars. Together with three other Anglosphere countries, they comprise the Five Eyes espionage and intelligence alliance.