
ANZSIL may award life membership to honour those who have given valued service to the Society.
Pursuant to the 1997 ANZSIL Constitution, ANZSIL could award life membership to a person who had been an ANZSIL member for fifteen or more years, had served as a Council member for four or more years, and had contributed significantly through involvement in international law to the advancement of international law in Australia or New Zealand.
ANZSIL’s Constitution (2024) provides that the Council may honour any member as a Life Member who has (a) rendered long and valued service to the Society; or (b) has given outstanding service to the Society and demonstrated exceptional commitment to pursuing the Society's objects over time.
ANZSIL has awarded life membership on five occasions. Details and citations for life membership at the time awarded are below.
Bill Campbell was a founding member of ANZSIL and Vice-President (Australia) from 2001 to 2003. 
‘Bill Campbell has contributed extensively to the practice of international law in Australia and to ANZSIL over many years. He was General Counsel (International Law) and head of the Office of International Law in the federal Attorney-General’s Department from 1996-2018. Bill Campbell advised successive Australian Governments on all areas of international law and its implementation in Australia. He was also responsible for the conduct of, and appeared in, cases involving Australia before international courts and tribunals including the International Court of Justice and the International Tribunal for the Law of the Sea.
Bill has been consistent in his generous support for ANZSIL since it was founded, including, at the time of his award of life membership, as a member of the editorial board of ANZSIL Perspective.’
Judge Hilary Charlesworth of the International Court of Justice, was a
founding member of ANZSIL and ANZSIL’s first President (1997 to 2001).
‘Professor Hilary Charlesworth AM is Professor and Director of the Centre for International Governance and Justice in the Regulatory Institutions Network at the Australian National University (ANU). She also holds an appointment as Professor of International Law and Human Rights in the College of Law, ANU. She has held visiting appointments at United States and European universities. She held an Australian Research Council (ARC) Federation Fellowship from 2005-2010 and currently holds an ARC Laureate Fellowship.
Professor Charlesworth is on the editorial boards of a number of international law journals and served as Co-Editor of the Australian Yearbook of International Law from1996-2006. She was elected to the Institut de Droit International in 2011. She has worked with various non-governmental human rights organisations on ways to implement international human rights standards and was chair of the Australian Capital Territory government's inquiry into an ACT bill of rights, which led to the adoption of the ACT Human Rights Act 2004. She was appointed judge ad hoc of the International Court of Justice in 2011 for Whaling in the Antarctic.’
Sir Kenneth Keith was a founding member of ANZSIL and ANZSIL’s first Vice-President (New Zealand). 
‘Sir Kenneth Keith has been a judge of the International Court of Justice since February 2006, the first New Zealander to be elected to that position. Before that he was a judge of the New Zealand Court of Appeal and Supreme Court and of appellate courts in the Pacific and a member of the judicial committee of the Privy Council. He has also sat on a number of international tribunals. He was a member of the legal teams in the ICJ in Nuclear Tests. Judge Keith was a founding member of the New Zealand Law Commission, a member of bodies which proposed official information legislation, the bill of rights and the proportional electoral system. Earlier he was a member of the Office of Legal Affairs of the United Nations assisting the International Law Commission and related bodies and the New Zealand Department of External Affairs.
For much of his working life Judge Keith has been an academic, primarily at the Victoria University of Wellington. He studied law there and at the University of Auckland and Harvard Law School. Judge Keith has published widely in the areas of administrative law, constitutional law, law reform, legal education and international law.’
Professor Rothwell played a central role in the origins and subsequent success of ANZSIL. 
'Professor Rothwell was a participant in the annual International Law Weekend that preceded the establishment of the Society. As the Society’s second President, serving from 2001 to 2005, Professor Rothwell oversaw the substantial growth of the Society, and led a range of new initiatives including building connections with other societies of international law globally. He oversaw the convening of ANZSIL conferences and the compilation and publication of comprehensive conference proceedings. Professor Rothwell has played a particularly important role in supporting a new generation of international law scholars, including through the ANZSIL Postgraduate Student Workshop and in initiating the ‘four societies of international law’ conferences, a collaboration between ANZSIL, ASIL, CCIL and JSIL designed to foster collaboration and connection between early career scholars.
Professor Rothwell remains closely engaged with ANZSIL's work, presenting his research to the annual conference, and participating in ANZSIL Interest Group events. He has also been an important mentor for subsequent ANZSIL office holders as well as academic colleagues more generally.’
Professor Ivan Shearer was a founding member of ANZSIL and ANZSIL’s first Vice-President (Australia). 
‘Professor Ivan Shearer is Emeritus Professor of Law at the University of Sydney (having retired from the Challis Chair of International Law in 2003), and Adjunct Professor in the School of Law at the University of South Australia. He previously taught at the University of New South Wales (1975-1993) and the University of Adelaide (1965-1972). He has held visiting positions at the Australian National University, the University of Melbourne, Indiana University, Bloomington, the United States Naval War College, Newport, and All Souls College, Oxford.
Professor Shearer is a member of the Bars of New South Wales, Victoria and South Australia, and has appeared in cases before the higher Australian courts including the High Court of Australia. He served as a Senior Member of the Australian Administrative Appeals Tribunal from 2004 to 2008. He is a member of the Panel of Arbitrators of the Permanent Court of Arbitration, The Hague. He was judge ad hoc in two cases before the International Tribunal for the Law of the Sea, Hamburg, and continues to serve in international arbitrations. Since 2001 Professor Shearer has served as an elected member of the United Nations Human Rights Committee. In March 2007 he was elected Vice-President of the Committee for a term of two years.’