Cyrus Benson


Cy Benson is a partner in the London office of Gibson, Dunn & Crutcher, and serves as Co-Chair of the firm’s International Arbitration Practice Group.

Mr. Benson represents clients in commercial and investment treaty arbitrations under all major institutional rules arising from a wide variety of industry sectors, with particular emphasis in oil & gas, mining/minerals and infrastructure.  He is experienced in complex litigation and has significant trial and appellate experience in U.S. federal and state courts.

His recent representations include advising a major oil company in a $1.5 billion ICC arbitration arising from divestment of an Eastern European refinery, pipeline and export company; a US energy company in a high value ICSID arbitration arising from the termination of a geothermal concession by an African State; and a major oil company in multi-billion dollar claims for expropriation under the Energy Charter Treaty.

Mr. Benson is consistently ranked as a leading lawyer for International Arbitration by Chambers and Partners UK Guides, Chambers and Partners Global Guides, and Best Lawyers International.  In addition, he is recognized for International Arbitration by The Legal 500 UK; “highly recommended” for Dispute Resolution: Arbitration in Practical Law Company's Which Lawyer?, and listed as an expert in Arbitration in Who's Who Legal 2015, and UK Legal Experts 2012.  Mr. Benson has also been recommended for Dispute Resolution: International Arbitration in Chambers Europe.  He was a member of the IBA Task Force on Party Representation in International Arbitration and also sits as an arbitrator.

Year Qualified:
New York, USA - 1992
United Kingdom - 2008

Contact details

+44 (0)20 7071 4239 /

Areas of Practice


Year Qualified



Syracuse University - 1986 Master of Arts
Syracuse University - 1984 Bachelor of Arts
New York University - 1991 Juris Doctor


United States District Courts for the Eastern District of New York
Courts of the State of New York
Solicitor of England and Wales
New York City Bar Association
London Court of International Arbitration;
International Bar Association
Dubai International Arbitration Center
United States District Courts for the Southern District of New York
United States Court of Appeals for the Second Circuit