Romain Zamour is a member of the Litigation Department based in New York. His practice focuses on the resolution of international disputes, including through international commercial and investment arbitration, international litigation, and public international law processes. Mr. Zamour is fluent in both the civil law and common law traditions and is admitted to practice in Paris and New York.

Mr. Zamour has represented individuals, corporations, and States in a broad range of commercial and investment arbitration proceedings around the world, seated in various jurisdictions and governed by various substantive laws and arbitration rules, including the rules of ICSID, the ICC, the LCIA, and ad hoc rules. He has also advised parties in international litigation matters, including with respect to the recognition and enforcement of international arbitration awards. He has particular experience in the mining, oil & gas, power, media and financial sectors.

Prior to entering private practice in New York in 2014, Mr. Zamour served for a year as Assistant Legal Counsel at the Permanent Court of Arbitration in The Hague, where he assisted arbitral tribunals in inter-state and UNCITRAL investor-state arbitrations. Mr. Zamour joined Debevoise in 2016 and resided in the firm’s Paris office from 2018 to 2021.

Mr. Zamour regularly speaks and publishes on international law. Since 2019, he has been a lecturer at Sciences Po Law School, co-teaching a workshop on crime and international arbitration, and a seminar on international business litigation and arbitration. Mr. Zamour also served on the organizing committee for the 2018 annual meeting of the American Society of International Law.

Mr. Zamour was educated at the Yale Law School, the Sorbonne and the Ecole Normale Supérieure de Paris (Ulm). He is a member of the bar in Paris and New York.


  • Yale Law School, 2013, J.D.
  • Université Paris I Panthéon-Sorbonne, 2013, M.A.
  • Université Paris I Panthéon-Sorbonne, 2010, B.A.
  • Université Paris IV Paris-Sorbonne, 2009, B.A.

Bar Admissions

  • New York
  • Paris