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Jennifer Younan


Jennifer has over 20 years of experience advising and representing companies, State-owned entities and States in significant international commercial and investment treaty arbitrations conducted under all major arbitration rules.

Known for her “multi-industry expertise”, Jennifer’s experience covers a wide range of industry sectors and types of disputes, including energy and mining & metals, with a particular focus on investment-related disputes in emerging markets, as well as disputes having a Russian nexus (including sanctions). She is also well known for advising on cutting-edge and topical issues in the field of public international law. Jennifer has notably advised on several of the largest international disputes submitted to arbitration securing historic victories for her clients, including a $50 billion award for the majority shareholders in the former Yukos Oil Company (the largest award ever rendered by an arbitral tribunal).

Jennifer is a member of the ICC Commission on Arbitration and ADR, the Editorial Board of the ICC Dispute Resolution Bulletin and the ICC Task Force on addressing issues of corruption in international arbitration. She is also an Officer of the LCIA European Users’ Council and a former Australian Government Delegate to the UNCITRAL Working Group II on Arbitration and Conciliation.

Jennifer is consistently recognized at the top of her field, ranking as a Global Market Leader in Chambers & Partners, a Leading Lawyer in The Legal 500 and a Global Leader and Thought Leader (France) in Who’s Who Legal: Arbitration.


Representative matters

A Turkish industrial company in relation to the application to the company’s worldwide operations of EU sanctions imposed in the context of the Russian invasion of Ukraine.

Ukraine, Respondent in an SCC arbitration in Stockholm brought by VEB.RF, the Russian State development agency. The dispute relates to sanctions and other measures allegedly targeting Russian banks in Ukraine after 2014. The claims are brought under the Ukraine-Russia bilateral investment treaty.

Ukrainian State-owned nuclear agency Energoatom in connection with the expropriation of its assets on the temporarily occupied territories of the Autonomous Republic of Crimea and Enerhodar, including the Zaporizhzhia Nuclear Power Plant, and the preparation of written notifications of dispute sent on behalf of Energoatom to Russia under the Ukraine–Russia bilateral investment treaty.

A global social media company in relation to State interferences with its business in an attempt to hinder public exchange. The relevant conduct implicates a number of fundamental human rights, including the right to freedom of expression, the right to privacy and the right to non-discrimination. Advising on potential recourse in several fora, including regional human rights courts. 

Pro bono

Trustee of the UK Board for the Fred Hollows Foundation, an international development organisation working towards eliminating avoidable blindness and improving Indigenous Australian health.

Advising an international human rights organization on state jurisdiction outside a state’s internationally recognized territory for the purposes of a claim before the European Court of Human Rights. 

Advising an environmental charity on the energy transition and its impact on corporate directors’ duties in the EU, France and Germany.

Assisting the UN Special Rapporteur on human rights and the environment in conducting research on the application of human rights norms in the context of protection and conservation of biological diversity, ecosystems, protected areas, etc.

Published Work

  • Younan, Jennifer, Co-editor, (2008) State Entities in International Arbitration, IAI Series on International Arbitration No. 4), New York: Juris Publishing

Speaking Engagements

  • Speaker, “Addressing Corruption Challenges in International Arbitration”, 18th ICC Türkiye Arbitration Day, February 2024
  • Speaker, “The Inside Track: Views From Within A State”, Sovereign & States Disputes and Enforcement Summit 2024, London, February 2024
  • Speaker, “Tylney in Town” Paris, London Court of International Arbitration, Paris, October 2023
  • Speaker, “Rise in Counterclaims in Investor-State Dispute Settlement”, Energy Disputes Panel, GIAC Arbitration Days, Tbilisi, Georgia, October 2023

Leadership Positions And Professional Affiliations

  • Member, Steering Committee, ICC Australia Arbitration Committee
  • Member, ICC Commission on Arbitration & ADR
  • Member, ICC Dispute Resolution Bulletin Editorial Board
  • Member, ICC Task Force on Addressing Issues of Corruption in International Arbitration
Jennifer Younan is not only one of the best and smartest arbitration lawyers out there, she is also consistently representing her clients with integrity and class. Very impressive.
The Legal 500, 2023
Jennifer Younan is our key contact in the practice. She is a strategy maker and excellent specialist in international public law.
The Legal 500, 2023


  • Global Market Leader, Chambers & Partners (2023)
  • Leading Lawyer, The Legal 500 (2023) 
  • Global Leader and Thought Leader (France), Who’s Who Legal (2023)



Paris, 2014
England & Wales, 2007
New South Wales, Australia, 1999


LLB, University of New South Wales, 1998
BCom, Finance, University of New South Wales, 1998
BCL, University of Oxford, 2001
MPhil, Public International Law, University of Oxford, 2003


A&O Shearman was formed on May 1, 2024 by the combination of Shearman & Sterling LLP and Allen & Overy LLP and their respective affiliates (the legacy firms). Any matters referred to above may include matters undertaken by one or more of the legacy firms rather than A&O Shearman.