Photo of Dietmar Prager

Dietmar Prager

Club Member

Partner, Debevoise & Plimpton LLP


  • Print Biography
  • Download Curriculum Vitae
  • Connect on LinkedIn

Dietmar W. Prager is a litigation partner in the firm’s New York office who focuses his practice on international arbitration and litigation. He co-leads the firm’s Latin America Practice Group.

Dr. Prager has represented parties in numerous arbitrations throughout the world under the auspices of the ICC, ICSID, LCIA, AAA, ICDR and the PCA as well as in ad hoc arbitration proceedings. He was also one of the youngest lawyers ever to argue before the International Court of Justice.


Dr. Prager’s recent representations include disputes involving complex infrastructure projects, mining projects, shareholder disputes, investment treaties, oil & gas projects, energy projects, the retail sector, the finance sector, sovereign debt and distribution

agreements. Dr. Prager also regularly sits as arbitrator.


Dr. Prager is ranked among the leading international arbitration practitioners by Chambers Global, Chambers USA, Chambers Latin America, The Legal 500 US, The Legal 500 Latin America, Benchmark Litigation, The Lawdragon Global Litigation 500 and Who’s Who Legal, which recognizes him as a Thought Leader for Arbitration. He receives high praise from clients who say he is “an extraordinarily sophisticated lawyer” with “deep commercial awareness and wonderful client service skills.” He is said to be “fully hands on, with outstanding legal skills” and “he goes to the core of each issue with great analytical skills and unparalleled capability to deal with foreign law matters.” Sources say “he is brilliant and knows his business inside and out” and he has been described as “analytically strong,” “a very thorough and careful lawyer” who “displays excellent strategic thinking.” He is said to be “really very impressive,” “outstanding” and an “excellent lawyer.” The publications have also highlighted his “excellent strategic thinking,” “excellent combination of legal knowledge and experience” and his ability to “effortlessly work across cultures and jurisdictions.” He receives further praise for his “impressive work and responsiveness to clients’ needs,” his “great depth of analysis,” his “great ability to manage stressful situations” and his “vast linguistic ability.”


Dr. Prager is an officer of the IBA Arbitration Committee, a member and former vice-chair of the Executive Committee of the Institute for Transnational Arbitration (ITA), a member of the KCAB International

Arbitration Committee and a member of the Board of the Vienna International Arbitration Centre (VIAC). He also serves as a member of the Vance Center Committee, the governing body of the Cyrus R. Vance Center for International Justice. He is a former co- chair of the IBA Subcommittee on International Arbitration Case Law.  Dr. Prager is a member of the International Council for Commercial Arbitration (ICCA), the Society of Construction Law North America, the Comitê Brasileiro de Arbitragem (CBAr), the Asociación Latinoamericana de Arbitraje (ALArb), the Club Español de Arbitraje and the American Society of International Law.


Dr. Prager is the author of several articles and blogs on international arbitration, international courts and tribunals, international procedural law, as well as Latin-American integration, and he speaks regularly at international arbitration conferences.


Dr. Prager is a member of the bar of New York. Prior to joining Debevoise in September 2000, Dr. Prager served as Legal Officer at the Registry of the International Court of Justice. He received his LL.M. from New York University School of Law, his Dr. iur. from University of Innsbruck and his law degree from University of Vienna.


Dr. Prager speaks English, German, Spanish and French and is proficient in Portuguese.