Benjamin G. Greenberg is the former United States Attorney for the Southern District of Florida. He is a seasoned litigator who represents corporations and individuals in criminal and civil government investigations conducted by the U.S. Department of Justice, the SEC, and various regulatory entities. He is recognized among The Best Lawyers in America, Criminal Defense: White-Collar, 2022-2025, and as “a strong choice for individuals facing fraud charges, as well as corporations requiring representation in internal and federal investigations.” (Chambers USA, 2025)*. Clients have called Ben “a phenomenal writer and oral advocate.” (Chambers USA, 2025)*.
Ben focuses on fraud involving federal health care programs, securities and investment fraud, accounting fraud, SEC enforcement matters, financial institution fraud and the Bank Secrecy Act (BSA), money laundering, the Foreign Corrupt Practices Act (FCPA), and the False Claims Act (FCA). Ben’s clients include private equity funds, pharmaceutical and medical device manufacturers, banks, healthcare providers, and international companies in the technology, financial services, and investment sectors. Ben leads internal corporate investigations in various areas and is an experienced trial attorney who has tried over 25 cases to verdict in federal court.
Ben also maintains an active civil practice, representing public and private companies, investment funds, and individuals in cases involving fraud, defamation, breach of contract, and fiduciary duty claims. He also advises companies on merger due diligence, post-merger litigation, compliance, and sanctions.
As U.S. Attorney, Ben was the chief federal law enforcement officer in South Florida, leading one of the largest and busiest offices in the country. Ben oversaw cases involving foreign bribery, healthcare fraud, BSA and money laundering violations, public corruption, terrorism, and counterintelligence. In both Republican and Democratic administrations, Ben worked closely with senior leadership at the Department of Justice in Washington. He utilizes this experience to defend and advise companies and individuals both locally and nationally. Ben also served as the district’s Crisis Management Coordinator for almost a decade, working with federal and local law enforcement agencies.
Concentrations
•White collar crime
•Internal Investigations
•Health care fraud
•Securities litigation
•Asset Forfeiture
•Money laundering
•Federal court civil litigation
•False Claims Act
•Foreign Corrupt Practices Act
•Government investigations
•Sanctions
Judicial Clerkships
•Hon. Jon Phipps McCalla, U.S. District Court for the Western District of Tennessee, 1999-2000
Recognition & Leadership
Awards & Accolades
•Listed, The Best Lawyers in America, Criminal Defense: White-Collar, 2022-2026
•Listed, Chambers USA Guide, Litigation: White-Collar Crime & Government Investigations, 2023-2025
•Listed, South Florida Legal Guide, 'Top Lawyer,' 2021
•Listed, The Legal 500 United States
•Corporate Investigations and White-Collar Criminal Defense, 2022-2023
•Corporate Investigations and White-Collar Criminal Defense: Advice to Corporates, 2021
•Corporate Investigations and White-Collar Criminal Defense: Advice to Individuals, 2021
•Listed, The Legal 500 Latin America Guide, 'Latin America: International - City Focus: Miami,' 2021-2024
•Selected, National Law Review, 'Go-To Thought Leader: Finance Law - Anti-Money Laundering Legislation,' 2021
•Recognized, Daily Business Review, “Most Effective Lawyer - Criminal Law,” 2006