Martin J. Weinstein is a partner in Cadwalader’s Global Litigation Group, leads the firm’s global Compliance, Investigations & Enforcement practice, and is a member of the firm’s Management Committee. His practice focuses on investigations, compliance and enforcement actions covering virtually every type of financial fraud in almost every industry, spanning more than 60 countries. With more than 30 years of experience, Weinstein is regularly named among the top legal strategists in government enforcement and is recognized as one of the world’s foremost authorities on the U.S. Foreign Corrupt Practices Act (FCPA), as well as an expert on the False Claims Act (FCA), where he draws on his government background to advise clients on whistleblower litigation, internal investigations, and regulatory risks. He has been called as an expert witness on a number of occasions dealing with issues related to FCPA enforcement and compliance. Weinstein has defended many of the biggest public FCPA cases in history, representing major global corporations including Lucent, Daimler, Tyco, Teva, Juniper Networks, Alcatel, and Titan, as well as many more investigations which were never public.
Weinstein has been consistently recognized by Lawdragon as one of the “500 Leading Global Litigators” and as one of the “500 Leading Litigators in America” since 2023. He was also named by Lawdragon to the inaugural “500 Global Leaders in Crisis Management” and as one of the “500 Leading Lawyers in America." Weinstein is co-author of The Foreign Corrupt Practices Act: Compliance, Investigations and Enforcement, the comprehensive practitioner’s book covering all aspects of the FCPA.
Weinstein represents corporations, organizations, and executives in a wide variety of sensitive compliance and white-collar matters, including bribery and corruption, insider trading, fraud, whistleblowing, healthcare fraud linked to the Anti-Kickback Statute and money laundering. He regularly designs and benchmarks corporate compliance programs, conducts internal investigations worldwide, and counsels on a variety of foreign business practices involving export controls and related matters. Weinstein also counsels on corporate transactions across every industry.
Lawdragon Honors
| Honor | Year | Practice |
|---|---|---|
| The 2026 Lawdragon 500 Leading Litigators in America | 2026 | White Collar, Compliance, Investigations, Enforcement |
| The 2025 Lawdragon 500 Leading Litigators in America | 2025 | White Collar, Compliance, Investigations, Enforcement |
| The 2025 Lawdragon 500 Leading Global Litigators | 2025 | International Litigation, Investigations |
| The Lawdragon 500 Global Leaders in Crisis Management | 2025 | Compliance, Investigations, Enforcement |
| The 2025 Lawdragon 500 Leading Lawyers in America | 2025 | White Collar, Compliance, Investigations, Enforcement |
| The 2024 Lawdragon 500 Leading Global Litigators | 2024 | Compliance, Investigations, Enforcement |
| Lawdragon 500 Leading Global Litigators | 2023 | Compliance, Investigations, Enforcement |
Weinstein has led many complex high-stakes investigations and multijurisdictional enforcement defenses; he has tried more than 40 cases and argued more than a dozen appeals. He has also been involved in a broad range of Congressional inquiries including investigations into campaign finance, international banking practices and complex global trade disputes. Weinstein's experience is broad, having covered everything from negotiating sensitive matters with foreign leaders to representing the Commissioner of Major League Baseball in the Pete Rose investigation.
Weinstein is very active in community affairs, ranging from service in higher education and philanthropic foundations to underserved youth and environmental causes. He currently serves on the Board of Directors of the United States Olympic & Paralympic Foundation and sits on Dartmouth College’s Presidential Leadership Council. Recently, he served as co-chair of the U.S. Holocaust Memorial Museum’s 2022 National Tribute Dinner and was a founder of the Willkie Farr & Gallagher LLP Greater DC Community Foundation. In addition, Weinstein was previously Chairman of the Board of the Community Foundation for Greater Washington as well as Chair of the Trustee/Governance Committee of the Board of the Landon School for Boys.
Weinstein received his J.D. from the University of Virginia School of Law and his undergraduate degree from Dartmouth College. He was a trial attorney in the Tax Division at the Department of Justice before serving as an Assistant U.S. Attorney for the Northern District of Georgia. Weinstein is admitted to practice in the District of Columbia, Maryland, and Georgia.