Grant Hanessian


Adjunct Professor of Law

Hanessian ADR, LLC
465 First Street
Brooklyn, NY 11215
United States of America

[email protected]
[email protected]
Personal Website

Grant Hanessian is an independent arbitrator and neutral in New York, specializing in international, investor-state, and complex commercial disputes.

For more than three decades, Mr. Hanessian has acted as counsel and arbitrator in a wide range of commercial and treaty disputes arising under the laws of many common and civil law countries and public international law.   Prior to June 2020, he was a partner at Baker McKenzie, where he practiced for 33 years and served as global co-head of the firm’s International Arbitration Practice, head of its International Arbitration Practice in North America and head of its New York office Litigation Department.

Mr. Hanessian is currently the U.S. member of the International Chamber of Commerce's International Court of Arbitration in Paris, chairman of the Arbitration Committee of the U.S. Council for International Business (U.S. national committee of the ICC), and a member of the ICC's Commission on Arbitration and its Task Forces on the Arbitration Involving States or State Entities and on Financial Institutions and International Arbitration (leader of Investment Arbitration and Banking & Finance workstream). 

He is a member of the American Arbitration Association—International Centre for Dispute Resolution's International Advisory Committee and its Advisory Committee on Brazil, Vice President (for the U.S.) of the London Court of Arbitration's North American Users’ Council, a member of the Singapore International Arbitration Centre's User's Council, the International Arbitration Club of New York, the Arbitration Committee of the International Institute for Conflict Prevention and Resolution, the New York City Bar Association's Committee on International Commercial Disputes,  Club Español del Arbitraje, the Panel of Recognized International Market Experts in Finance (P.R.I.M.E.) Arbitration Rules Drafting Committee and is a founding board member of the New York International Arbitration Center.

Mr. Hanessian is editor of ICDR Awards and Commentaries Vol. I (Juris Pub. 2012) and Vol. II (forthcoming Juris Pub. 2020) and co-editor of International Arbitration Checklists (Juris Pub., 3rd ed., 2016), Gulf War Claims Reporter (ILI/Kluwer, 1998),  Baker & McKenzie's International Litigation & Arbitration Newsletter, and Baker & McKenzie's  International Arbitration Yearbook.  

Mr. Hanessian is annually recommended by Chambers Global and USA Guides (described as "very knowledgeable and strategic in his offering of critical advice," an "elite lawyer" who is "very experienced, hugely knowledgeable and effective," a "powerful advocate for clients"), Legal 500 (described as “a great practitioner” with a “strong commercial profile”), PLC Which Lawyer, The International Who's Who of Commercial Arbitration and  Expert Guide to Leading Practitioners in International Arbitration (ranked among "Best of the Best" in international commercial arbitration).   


LL.M. degree in International Law. Columbia University, 
J.D. degree, New York University 
B.A. degree, University of Pennsylvania.

Mailing Address

Fordham University School of Law
Legal Writing Program
150 West 62nd Street, Room 7-175
New York, NY 10023