UCL Faculty of Laws

Prof Martins Paparinskis

Prof Martins Paparinskis

Professor of Public International Law

Faculty of Laws


Joined UCL
1st Sep 2013

Research summary

Professor Martins Paparinskis is a generalist public international lawyer with a variety of specialist interests. He has published on foundational topics of public international law, such as sources of international law, law of treaties, State responsibility, and international dispute settlement, as well as on topics in the subfields of investment law, human rights law, and environmental law. Martins has published in American Journal of International Law, British Year Book of International Law, European Journal of International Law, and Modern Law Review, and for his monograph in Oxford Monograph Series in International Law. His work is regularly cited on issues of international law by domestic courts and international tribunals, most recently in OOO Manolium Processing v Belarus, PCA Case no 2018-06, Final Award, 22 June 2021; Lion Mexico Consolidated v Mexico, ICSID Case no ARB(AF)/15/2, Award, 20 September 2021; Westbridge Ventures II Investment Holdings v Anupam Mittal [2021] SGHC 244; Professores de Chanaral y otras Municipalidades Vs. Chile, Sentencia de 10 de noviembre de 2021; Trustees for the time being of Burmilla Trust and Another v President of RSA and Another (Case no 64/2021) [2022] ZASCA 22; and Gramercy Funds Management LLC and Or v Peru, ICSID Case no UNCT/18/2, Award, 6 December 2022

Teaching summary


Public International Law (LAWS0027)


International Arbitration (LAWS0256): Co-convenor

International and Global Environmental Law (LAWS0274)

International Law of Foreign Investment (LAWS0239): Convenor

Law and Policy of International Courts and Tribunals (LAWS0235): Convenor


University of Oxford
Doctorate, Doctor of Philosophy | 2010
University of Oxford
Other higher degree, Master of Philosophy | 2006
University of Oxford
Other higher degree, Master of Laws | 2005
Latvia State University
First Degree, Bachelor of Laws | 2004


Professor Martins Paparinskis joined UCL Faculty of Laws in 2013. Prior to this, he was a Junior Research Fellow at Merton College Oxford and a Hauser Research Scholar at the New York University. He took an LL.B. from the University of Latvia, before coming to the UK to take his M.Jur. (Dist, Clifford Chance Prize), M.Phil (Dist), and D.Phil. from the University of Oxford. He is a Member of the PhD Scientific Board of the Doctoral College of the University of Milan-Bicocca and a Global Fellow at the National University of Singapore Centre for International Law, and has held visiting positions at the National University of Singapore and the University of Bologna. In 2016, he received UCL Laws Excellence Award for Legal Teaching (EXALT): Graduate. 

Martins' research expertise is reflected in his appointments. He is a member of the United Nations International Law Commission (2023-). Martins is a member of the Council of Independent Experts in International and European Law with the Minister of Foreign Affairs of Latvia (since 2012), and has been a member of Latvia's delegation to the United Nations General Assembly's Sixth Committee (Legal) (2021-2) and delivered statements there on behalf of the Baltic States (2021). In the field of international dispute settlement, he is a member of the Permanent Court of Arbitration (since 2017) and a conciliator of the OSCE Court of Conciliation and Arbitration (since 2019). In the field of investment law, Martins is a member of the ICSID Panels of Arbitrators (since 2014, re-designated 2020) and of Conciliators (since 2020), a member of the Beijing Arbitration Commission / Beijing International Arbitration Center's Panel of Arbitrators for International Investment Arbitration, and a member of CIETAC (China International Economic and Trade Arbitration Commission) Panel of Arbitrators (both since 2022). In the field of human rights, he is a member of the Advisory Committee on the Framework Convention for the Protection of National Minorities and the list of experts for the OSCE Human dimension mechanism (Moscow mechanism) (both since 2022), and has been a member of the management board of the EU Fundamental Rights Agency (2017-22) and an expert in a case by the invitation of the Inter-American Court of Human Rights (2021). In the field of environmental law, Martins is a member of the implementation committee of the UNECE Water Convention (since 2018). In the field of law of the sea, he was the Lead Discussant to Interactive Dialogue 7 of the 2022 UN Ocean Conference. 

Martins is the Editor in Chief of CIL Dialogues, the Book Review Editor of Journal of World Investment and Trade, and a member of the Editorial Advisory Board of Max Planck Yearbook of United Nations Law, the Academic Review Board of Cambridge Journal of International Law, the Editorial Board of Journal of the University of Latvia. Law, and the Editorial Advisory Board of Investment Claims, and has been a member of UCL Press executive group (editorial board) and a co-editor of Current Legal Problems. He is a member of the Academic Forum on ISDS, the Academic Council of the Institute for Transnational Arbitration, the Advisory Board of the BIICL Young ITF, and the International Law Association’s Committee on Rule of Law and International Investment Law. Martins has been a member of the Association's Committee on Non-State Actors and Study Group on the Use of Domestic Law Principles for the Development of International Law.