Australia–United States relations

Australia and the United States are close allies, maintaining a robust relationship underpinned by shared democratic values, common interests, and cultural affinities. Economic, academic, and people-to-people ties are "vibrant and strong", the US Embassy in Canberra notes. 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.

Both the United States and Australia share some common ancestry and history, having both been British colonies. Both countries have native peoples who were at times 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.