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Reena A. Gambhir

Reena has broad and substantial experience representing U.S. and global businesses and individuals in complex litigation in U.S., European and other courts.  As a partner in Hausfeld’s Washington, D.C. office, Reena litigates and resolves antitrust claims for corporate clients who have suffered financial harm as a result of antitrust violations. ­Reena’s wide-ranging experience allows her to uniquely advise and act for clients in all stages of litigation in matters around the world, and achieve wide-ranging innovative strategies and solutions.

Reena is currently leading In re Foreign Exchange Benchmark Rates Antitrust Litigation, 13-cv-07789 (S.D.N.Y.), a high stakes lawsuit alleging a global conspiracy by some of the world’s largest financial institutions to fix and manipulate foreign exchange rates. In this case, Reena was instrumental in negotiating and drafting settlements reaching over $2.3 billion in total.  She has also had a leading role in overcoming three rounds of motions to dismiss in the case, and has worked with leading economists to draft the class certification papers. For its work on the case, Hausfeld received Global Competition Review’s award for “Litigation of the Year – Cartel Prosecution.” Reena was recently appointed co-lead counsel in the In re Farm-Raised Salmon and Salmon Products Litigation, representing a putative class of salmon purchasers alleging a price-fixing conspiracy between the leading producers of farm-raised Atlantic Salmon.

Reena’s recent achievements include, among other matters, representing U.S. and foreign businesses in In re Refrigerant Compressors Antitrust Litigation, 2:09-md-02042 (E.D. Mich.) alleging price-fixing and reaching settlements of approximately $50 million. She also was one of the principal lawyers to secure settlements totaling almost $100 million in an antitrust case involving the chemical industry (In re Hydrogen Peroxide Antitrust Litigation, MDL No. 1682 (E.D. Pa.)).

Reena is committed to the private civil enforcement of competition law around the world. In connection with her UK partners, Reena represents clients, many of which are listed in Fortune Global 500 and Forbes Global 2000, in their individual damage claims seeking to recover losses as a result of price fixing cartels and other antitrust violations. These include purchasers of elevators, air freight services, Visa and MasterCard interchange fee services, and marine hoses. Additionally, in the marine hose matter, Reena recently concluded the negotiations for the final claims resulting from the first of its kind private global settlement with cartelist Parker ITR.

Reena is currently at the forefront of competition claims in South Africa, having worked with South African counsel in groundbreaking litigation on behalf of low-income bread consumers. This case resulted in a landmark ruling by the Supreme Court of Appeal (SCA) which determined for the first time the specific requirements for filing a collective action in South African courts.

Reena also dedicates herself to international human rights work. She represented residents of Bhopal, India who were exposed to toxic wastes. These wastes contaminated the soil and drinking water surrounding the infamous Union Carbide Plant, which was the site of the 1984 gas leak that killed and injured thousands of residents. Reena has also been involved in litigation in both the UK and South Africa on behalf of South African gold miners who have suffered from silicosis. Reena also assisted in the representation of the former “comfort women,” a title given to women and girls who were forced into sexual slavery during World War II. In her pro bono work, among other cases, Reena has successfully represented individuals in United States Immigration Court in political asylum proceedings.

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The George Washington University, National Law Center, J.D., cum laude, 2004, Thurgood Marshall Scholar

University of Chicago, M.A., 2000

Boston College, B.A., cum laude, 1999

Bar Admissions

District of Columbia


Affiliations & Memberships

Legal 500 Next Generation Lawyer in Antitrust - Civil Litigation/Class Actions - Plaintiff (2018-2019)

Global Competition Review's Top 40-under-40 Antirust Lawyers in the World, 2015.

Law360 Rising Star, 2015.

Appointed Leadership, American Bar Association's Section of Antitrust International Task Force.

Selected by the Washington Business Journal as a, "Top Minority Business Leader," 2015. 

International Human Rights Society

South Asian Bar Association

Women’s Antitrust Plaintiffs Association

Selected by Diversity Journal as one of their “Annual Women Worth Watching,” 2015.

DC Rising Star for 2014, The National Law Journal.

Elected Fellow, American Bar Foundation, 2014. 

Selected by Diversity Journal as one of their “Annual Women Worth Watching,” 2013.


Ms. Gambhir is co-author of Global Enforcement of Anticompetitive Conduct, presented in Florence, Italy at The Tenth Annual Sedona Conference on Antitrust Law & Litigation: The Globalization of Antitrust Enforcement (September 2008).  

Presentations & Speeches

Panelist, "Class Actions and Private Actions," George Mason Law Review's 18th Annual Antitrust Symposium, February 19, 2015.

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