Featured Lawyers
Viren Mascarenhas
Founding Partner
Viren Mascarenhas will be speaking on “International Disputes and US, UK and EU Sanctions: New York, London, and Europe” organized by the Chartered Institute of Arbitrators on June 30, 2026.
The Chartered Institute of Arbitrators provides education, training, and globally recognized accreditation for professionals working in arbitration. Viren is a Fellow of the Chartered Institute of Arbitrators. Viren frequently acts in matters in which one of the parties is the target of sanctions or the dispute has arisen because of the application of sanctions.
Mascarenhas Law is a disputes boutique headquartered in New York. The firm specializes in arbitration (construction, commercial, and investment disputes) as well as U.S. litigation, especially in cross-border disputes and relating to enforcement of foreign awards and judgments. Members of the firm also serve as arbitrators.
Viren has been ranked by the leading directories in the field of international arbitration and public international law. Recognition of his expertise and achievements include:
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Chambers USA and Chambers Global: International Arbitration, 2020 to present. The feedback from Chambers and client testimonials include: “Sources regard him as ‘bright, capable and a really strong advocate;’” “he is someone who has a deep understanding of investment treaty arbitration and has vast experience in the field;” and Viren is “a lawyer you want in your corner.”
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Legal 500: International Arbitration, 2018 to 2024 (“he stands out for his additional specialization in public international law and human rights”)
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Lexology Index: Thought Leader in the categories of Arbitration, Mining and Energy, 2017 to present
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2024 Lexology Awards: North America 2024, Litigation and Arbitration Award
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2024 Lexology Client Choice Awards, Arbitration & ADR, United States: New York
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The Best Lawyers in America: International Arbitration - Commercial, 2024
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Lawdragon 500 Leading Global Litigators, 2021 (inaugural list), 2023, 2024
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National South Asian Bar Association: Rising Star, 2019
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National LGBT Bar Association: Rising Star, 2019
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Euromoney Legal Media Awards: Rising Star in international commercial arbitration, 2019
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Latinvex (Rising star for disputes in Latin America), 2019
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Crain's New York Business: 40 under 40 List, 2019
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American Bar Association: Finalist for National Most Outstanding Young Lawyer, 2016
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Law360: Rising Star in Energy, 2015
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New York Law Journal: Rising Star, 2014
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Admitted to the Bar in New York (2006 to present)
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Columbia Law School, Lecturer-in-Law, 2009 to present (currently teaching an upper-level seminar on international commercial arbitration)
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Fellow of the Chartered Institute of Arbitrators (FCIArb), 2020
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CPR Institute, Arbitration Committee (Chair, 2023 to present; Vice-Chair, 2020 to 2023)
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CPR Institute, Distinguished Panel of Neutrals (2022 to present)
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American Arbitration Association/International Centre for Dispute Resolution, Panel of Arbitrators (2021 to present)
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New York City Bar Association, Member
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American Bar Association, Member
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International Bar Association, Member
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University of London, Master of Laws Degree (LLM) with Distinction, 2009
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Columbia Law School, Juris Doctor Degree (JD), 2005. James Kent Scholar (top 1-3% of class); Harlan Fiske Stone Scholar (top 33% of class); and Parker Certificate for Achievement in Foreign and International Laws
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University of Richmond, Bachelor of Arts Degree (BA), summa cum laude and Phi Beta Kappa, 2002
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London School of Economics, General Course Diploma, Economics, 2021. Specialization: International Dispute Resolution
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