Mathew Rosengart

Practice Areas

Litigation

Media & Entertainment Litigation

White Collar Defense & Investigations

Career

Mathew Rosengart, Co-Chair of Greenberg Traurig’s National Media & Entertainment Litigation Group and recognized as one of the nation’s preeminent litigators, has been described as a “heavyweight attorney” by Law360, a “high-powered Hollywood lawyer” by The New York Times, a “heavy-hitting trial lawyer” by The Legal 500, and “Hollywood’s King of Litigators” by Variety.

Described by his long-time client Sean Penn as a “tough as nails streetfighter with a big brain and bigger principles,” some of Mathew’s other accolades include being named a California Lawyer Attorney of the Year and one of the Top 100 lawyers in the State by the Daily Journal; a Sports & Entertainment Trailblazer by The National Law Journal; Lawyer of the Year by Above the Law; Litigator of the Week by The American Lawyer; a Top 100 Lawyer and LA500 Visionary Leader by the Los Angeles Business Journal, which also recognized him as a “household name” in entertainment litigation and a “go to litigator for Hollywood’s elite and Corporate America;” and Entertainment Litigator of the Year at the 2025 and 2024 Benchmark Litigation US awards, recognizing “the country’s most distinguished litigators and their firms for their exemplary work.”

Additionally, Forbes named Mathew to its inaugural list of America’s Top 200 Lawyers 2024, which according to the publication, recognizes the finest lawyers in the profession and those most respected by peers and clients, describing him as a “revered” and “elite Hollywood attorney,” who “brings the passion and legal expertise to private practice that made him notable as a federal prosecutor.”

Mathew has also been named by Lawdragon as one of the “500 Leading Litigators in America” and a Media and Entertainment MVP by Law360, which recognizes “the elite slate of attorneys” who “have distinguished themselves from their peers by securing hard-earned successes in high-stakes litigation.” Further, he has been lauded by NPR as a lawyer with “a lot of star power,” by Los Angeles Magazine as a “winner” with “a long history of getting results for his big name clients,” and by The Wall Street Journal and NBC’s Today as a “high profile litigator” and a “celebrity power attorney.”

Called upon for his expertise, Mathew was a keynote speaker at the American Bar Association’s Forum on Sports and Entertainment, Harvard Law School’s Sports and Entertainment Law Symposium, Harvard Law School’s Association of Law and Business Symposium, and Boston College Law School’s Sports and Entertainment Law Society’s 2025 Symposium. Perennially listed in Variety’s Legal Impact and The Hollywood Reporter’s Power Lawyer Reports, Mathew is also a recipient of Variety’s Power of Law Award for legal excellence and philanthropy, the Beverly Hills Bar Association’s Excellence in Advocacy Award, and Trinity College of Dublin’s Praeses Elit Award.

Professional Memberships

Board of Governors, Beverly Hills Bar Association, 2020-Present

Keynote Speaker, American Bar Association, Forum on the Entertainment and Sports Industries

Dean’s Distinguished Lecture, Boston College Law School

Speaker, Harvard Law School, Harvard Ass’n for Law and Business

Adjunct Professor of Law, "Criminal Procedure: Grand Jury Law & Practice," Fordham Law School, 2004-2006

Faculty, United States Attorney General's National Advocacy Center, lecturing in Trial Practice, 2000

Dean's Advisory Council, Tulane University

Member, Association of Business Trial Lawyers Los Angeles

Personal

Education

J.D., cum laude, Boston College Law School

B.A., Tulane University