Philip D. O'Neill

Philip D. O'Neill

Philip D. O’Neill, Jr. is a senior independent arbitrator for complex international and domestic commercial disputes, including cross-border contracts, sovereign and public-entity matters, trade-adjacent disputes, private investment, energy, telecommunications, aerospace and defense, technology, intellectual property, life sciences, distribution and supply, and post-closing disputes.

He has served as chair, sole arbitrator, wing arbitrator, or party-appointed arbitrator in approximately 150 large and complex matters, including more than 60 international matters, more than 80 domestic matters, over 40 chair appointments, over 60 sole-arbitrator appointments, and more than 70 reasoned awards.

Mr. O'Neill has been designated by the European Union as suitable to chair sovereign trade disputes under the EU/UK Trade and Cooperation Agreement.

Mr. O'Neill has been repeatedly listed in America’s Best Lawyers in International Arbitration as well as among the “World’s Finest Lawyers” by Expert Guides in International Commercial Arbitration. He is on the Silicon Valley Arbitration Center's short list of the world's best technology arbitrators. He also is a fellow in the U.S. based College of Commercial Arbitrators, as well as in England’s Chartered Institute of Arbitrators, which also recognizes him as a “Chartered Arbitrator.”  He is currently on the institutional arbitration panels or listings of numerous arbitral institutions in North America, Europe and Asia.  He was the Nomura Lecturer in Law on International Arbitration at Harvard Law School, and taught international arbitration for many years as an Adjunct Professor at Boston College and Boston University Law Schools. He has authored a textbook, teaching manual, book chapters and numerous articles on arbitration, and is a frequent speaker on the topic.