Marc L.Mukasey

Marc is a Fellow of the American College of Trial Lawyers and is consistently ranked at the highest level in Chambers Guide to the USA rankings (2013-2025) based on feedback from clients and peers: “From my perspective, he’s the best trial lawyer out there.”; “His presence in court is fantastic.”; “A tremendous trial lawyer.”; “In the courtroom, Marc has an incredible rapport with jurors and is a fantastic storyteller.” His work is nationwide and varied. In the span of a few days in 2025, he argued on behalf of a death row prisoner in Alabama and for a business executive in front of a jury in New York. 

Marc’s achievements include scores of high-stakes, high-pressure federal trials, including the acquittal of a Navy SEAL in a murder trial, the first-ever acquittal in a commodities fraud “spoofing” trial, and a critical courtroom role in one of the biggest cryptocurrency cases in history. He has represented a US president and convinced prosecutors to abandon a criminal investigation of a US representative. His experience also includes the representation of a major corporation in the Deepwater Horizon explosion, a world-famous professor, public officials at the state and local levels, a Hall of Fame coach, various law enforcement officials, a leading fashion brand, and a beloved national sports institution. Marc has also counseled numerous public and private companies and appeared before an NCAA hearing panel.

Prior to joining Seyfarth, Marc founded a boutique trial firm, led the white-collar defense practices at two international law firms, and was a chief in the US Attorney’s Office for the Southern District of New York.