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Who's Who Legal
Who's Who Legal
Thought Leaders

Thought Leaders

Thought Leader

WWL Ranking: Thought Leader

Global Leader

Arbitration 2021

Professional Biography

WWL Ranking: Recommended

Peers and clients say

"He possesses deep knowledge of investment arbitration"
"Bart has an excellent reputation"
"He is strong as counsel"


Barton Legum is a partner in Dentons’ Paris office and head of the firm's investment treaty arbitration practice. Bart has over 30 years' experience in litigating complex cases and has argued before numerous international arbitration tribunals, the International Court of Justice and a range of trial and appeals courts in the United States. His practice focuses on international arbitration in general and arbitration under investment treaties in particular.

He is a past chair of the American Bar Association’s section of international law, an international bar organisation with over 24,000 members from over 90 countries around the world. In September 2017, the president of the World Bank appointed Bart to the ICSID roster of conciliators for investment disputes.

Earlier in his career, Bart served as chief of the NAFTA arbitration division in the office of the legal adviser, United States department of state. In that capacity, he acted as lead counsel for the United States government in some of the first arbitrations under the investment chapter of the North American Free Trade Agreement (NAFTA). The United States won every case decided under his tenure.

He is the editor of The Investment Treaty Arbitration Review (5th ed 2020), an annual publication of Law Business Research. He is also a founding editor of International Litigation Strategies and Practice (1st ed 2005; 2nd ed 2014), a book published by the American Bar Association. Bart is often published on international dispute resolution topics and frequently speaks at conferences on international arbitration and litigation.

WWL Ranking: Recommended

National Leader

WWL Ranking: Recommended
WWL Ranking: Recommended
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