William R. Levi

WILL LEVI draws on his experience serving in senior roles at the U.S. Department of Justice and U.S. Senate to represent clients in high-stakes government enforcement actions, congressional investigations, litigation, and crisis situations. He focuses his practice on commercial disputes and government-facing litigation, including in matters defending against government enforcement actions and challenging federal regulatory action, and he represents clients before federal administrative agencies as well as in federal and state courts.

Prior to joining Sidley, Will served in senior roles at the U.S. Department of Justice, including as Chief of Staff of the Department of Justice and Senior Counselor to the Attorney General. In those roles, Will had broad responsibilities, including supervision of a wide range of high-profile civil litigation, criminal investigations and prosecutions, and national security matters. In recognition of outstanding service to the Department of Justice, Will was awarded the Department’s highest honor, the Edmund J. Randolph Award.

He also served as Chief Counsel to U.S. Senator Mike Lee and Staff Director of the U.S. Senate Judiciary Committee’s Subcommittee on Antitrust, Competition Policy, and Consumer Rights, which oversees the federal antitrust enforcement agencies and reviews major proposed mergers affecting the national economy.

Will regularly advises leading company executives and boards of directors on strategic legal issues arising from high-stakes litigation, congressional investigations and hearings, and government investigations and regulation. In recognition of his success, Will has been named a “Future Star” in the District of Columbia by Benchmark Litigation (2025), and he was ranked among an elite group of lawyers as a 2023 “D.C. Rising Star” by The National Law Journal.

Will clerked for U.S. Supreme Court Justice Samuel A. Alito, Jr. and U.S. Court of Appeals for the Third Circuit Judge Anthony J. Scirica. By appointment of the U.S. Court of Appeals for the D.C. Circuit, Will serves as a member of the Court’s Advisory Committee on Procedures. He is also an elected member of the American Law Institute and a member of the nominating committee for the William H. Webster Profiles in Leadership Award for Prosecution.

• Elected Member, American Law Institute
• Member, Nominating Committee, William H. Webster Profiles in Leadership Award for Prosecution
• Member, Advisory Committee on Procedures, U.S. Court of Appeals for the District of Columbia Circuit