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Contact John Thornton

John Thornton

John Thornton

Miami, Florida
(305) 358-6600
(305) 358-6601
E-mail: jt@dandtlaw.com

A 1992 graduate of Harvard Law School, John Thornton has over 20 years of experience representing and advising corporations and individuals in complex litigation.

Mr. Thornton has acted as lead or co-counsel on numerous multi-plaintiff actions. He has co-counseled or worked with leading law firms locally, nationally and internationally.

He has earned a reputation as an innovator and strategist.  He has pioneered successful theories of pre-judgment relief and jurisdiction in international human rights cases.   Through his work, he has brought relief to victims of torture, human trafficking, forced labor, and to the survivors of a massacre.  For his work prosecuting a case against a company trafficking persons internationally and engaging in forced labor overseas, the Daily Business Review named him to its "Most Effective Lawyers" list in the field of International Law.  A member of the bar of the District of Columbia, Mr. Thornton has successfully represented whistleblowers in qui tam actions alleging that the U.S. government has been defrauded.

Mr. Thornton represents corporations and individuals in litigation matters of all sizes. As a small businessman himself, he knows that the problems of small companies and individuals are every bit as important to them as are large companies' problems.  He is free to provide a unique value and flexibility to such client relationships. He is the rare attorney with a Harvard Law education, prestigious firm experience, and relationships with leaders in the legal community who is not dependent on a business model that requires rigid adherence to an hourly fee scale or multiple levels of billing. Mr. Thornton works directly on his clients' cases with a commitment to justice. 

Mr. Thornton's practice areas include Alien Tort Statute, Accidents, Complex Business Litigation, Contract Disputes, False Claims Act, Fraud, Human Rights (Trafficking, Torture), International Law and Litigation, Qui Tam Whistleblower lawsuits, Torts and USERRA.

Mr. Thornton is a member of the bars of the District of Columbia and Florida. He has achieved numerous victories representing both plaintiffs and defendants in complex litigation matters in state and federal courts in Florida and elsewhere, including the Eastern District of Virginia and the District of Columbia. Mr. Thornton speaks Spanish.

Prior to co-founding do Campo & Thornton, Mr. Thornton helped organize and was an investigator for a study commissioned by the U.S. Department of State to assess the violence in Darfur. The study resulted in the declaration of genocide by then Secretary of State Colin Powell. Mr. Thornton served as Adjunct Professor of Law at St. Thomas University School of Law. Prior to that, he worked with Mr. do Campo at the law firm Zuckerman Spaeder.

Most Effective Lawyrers 2008

Areas of Practice

  • Alien Tort Statute
  • Accidents
  • Complex Business Litigation
  • Contract Disputes
  • False Claims Act
  • Fraud
  • Human Rights (Trafficking, Torture)
  • International Law and Litigation
  • Qui Tam Whistleblower Lawsuits
  • Torts

Litigation Percentage

  • 95% of Practice Devoted to Litigation

Bar Admissions

  • Florida
  • District of Columbia


  • Harvard Law School, Cambridge, Massachusetts
    • J.D. - 1992


  • Adjunct Professor, St. Thomas University School of Law, 2005

Honors and Awards

  • 2008 Most Effective Lawyer Award from the Daily Business Review


  • English (Primary)
  • Spanish

Criminal Defense

En Espanol

Civil Litigation

Office Location

do Campo & Thornton, P.A.
Chase Bank Building
150 S.E. Second Avenue, Suite 602
Miami, FL 33131
Phone: 305-358-6600
Fax: 305-358-6601
Map and Directions


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