ITLOS and the Delimitation of the Continental Shelf beyond 200 Nautical Miles

Event date
23 November 2023
Event time
12:45 - 14:00
Oxford week
MT 7
The Old Library - All Souls College and Online

H.E. Judge Tomas Heidar, Judge of the International Tribunal for the Law of the Sea (ITLOS)

Notes & Changes

To join (whether in person or online), please complete the Registration Form by 5:30pm on Wednesday 22 Novembre 2023. Please note that if you register for online attendance after this time, a Zoom link may not be sent to you. If joining in person, registration is helpful but not essential.


Judge Heidar


Judge Tomas Heidar

President, International Tribunal for the Law of the Sea

Judge Tomas Heidar (Iceland) is President of the International Tribunal for the Law of the Sea (ITLOS). He has been Judge of the Tribunal since 2014 and was President of the ITLOS Chamber for Fisheries Disputes 2017-2020 and Vice-President of the Tribunal 2020-2023. He was a Member of the ITLOS Special Chamber in the Dispute concerning delimitation of the maritime boundary between Mauritius and Maldives in the Indian Ocean.

From 1996-2014, Judge Heidar served as Legal Adviser of the Ministry for Foreign Affairs of Iceland, attaining the rank of Ambassador. As such he was responsible for all matters of public international law and represented Iceland regularly at meetings on ocean affairs and the law of the sea at the United Nations and in other international fora.  

Judge Heidar is also Director of the Law of the Sea Institute of Iceland and Co-director and lecturer of the Rhodes Academy of Oceans Law and Policy. He lectures at the University of Iceland and many other universities and institutions around the world, including Queen Mary University of London, University College London, the British Institute of International and Comparative Law, the IFLOS Summer Academy and the Yeosu Academy of the Law of the Sea. He has taught law of the sea at the United Nations Regional Course in International Law in Ethiopia.

Judge Heidar has published numerous books and articles on ocean affairs and the law of the sea, most recently New Knowledge and Changing Circumstances in the Law of the Sea (ed., Brill Nijhoff, 2020) and “The Contribution of the International Tribunal for the Law of the Sea to the Protection of the Marine Environment” in the Korean Journal of International and Comparative Law (2021). He is also Conciliator and Arbitrator under Annexes V and VII to the United Nations Convention on the Law of the Sea.



The Public International Law Discussion Group at the University of Oxford is a key focal point for PIL@Oxford and hosts regular speaker events. Topics involve contemporary and challenging issues in international law. Speakers include distinguished international law practitioners, academics, and legal advisers from around the world.

PIL Discussion Group Convenor: Ayako Hatano

The Discussion Group's meetings are part of the programme of the British Branch of the International Law Association and are supported by the Law Faculty and Oxford University Press.

The speaker will commence at 12:45pm UK Time and the speaker will present for around 30-40 minutes, with around 30 minutes for questions and discussion. The meeting should conclude by 2pm UK Time.

Practitioners, academics and students from within and outside the University of Oxford are all welcome.

Found within

Public International Law