Ambassador Ian Biggs is Australia's Resident Representative and Governor to the Board of Governors of the International Atomic Energy Agency (IAEA), and Australia’s Permanent Representative to the United Nations in Vienna, as well as to the Comprehensive Test Ban Treaty Organisation (CTBTO) Preparatory Commission. He is the Australian Ambassador to Austria, Slovenia and the Slovak Republic, and Ambassador Designate to Bosnia and Herzegovina and Hungary.
He was appointed as the Ambassador for Arms Control and Counter-Proliferation in January 2022 and led Australia's international advocacy on global arms control, non-proliferation, and disarmament. He has previously served as Australia's Ambassador to Iran (2016-19), Turkey (2011-14), and Saudi Arabia (2005-08), as well as the Chargé d'Affaires in Baghdad and the Deputy Head of Mission in New Delhi, Vienna, and Damascus.
Ambassador Biggs has also served as Secretary of the International Commission on Nuclear Non-proliferation and Disarmament, Chair of the Australia Group, Special Assistant to the Director General of the International Atomic Energy Agency, and Chair of the Nuclear Suppliers Group's Dual Use Regime.
Ambassador Biggs holds a Master of Arts (International Relations) from the Australian National University and a Bachelor of Arts (Honours) from the University of Sydney.