The Australian Institute of International Affairs (AIIA) is a non-profit think tank based in Australia. Established in 1924 and formed as a national body in 1933, the organisation endeavours to promote interest in and understanding of international affairs. It consists of seven independent branches in each State and Territory (excluding the Northern Territory), along with the National Office located at Deakin, Canberra. It has approximately 1600 members.
The AIIA is an independent, non-profit, non-political organisation. Its constitution precludes it from holding or expressing an opinion of its own on any matter of international affairs.
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- New Zealand Institute of International Affairs
- Singapore Institute of International Affairs
- South African Institute of International Affairs
The website is