Orrin Harrison III

Of Counsel


Orrin Harrison is of counsel and a litigation attorney with Foley & Lardner LLP. Orrin’s practice focuses on coordinating and running large litigation defense cases for publicly regulated corporations. He has over 40 years of courtroom experience, has served as chief national outside litigation counsel to major companies, and is a frequent lead counsel in complex, multiparty litigation throughout the U.S.

Orrin represents clients with difficult, high-exposure business claims and disputes, which involve issues such as securities, mergers and acquisitions, construction, mutual funds, energy, and antitrust. He has appeared in trial courts in various states, as well as the various federal courts throughout the country.

Prior to joining Foley, Orrin was a partner at a Dallas-based law firm.

Representative Experience*

  • Successfully defended claw-back claims in weeklong trial in federal court against SEC-appointed trustee in Stanford Ponzi scheme resulting in first trial lost for trustee in five years
  • Successfully resolved a stock option backdating case for a large publicly held company after Wall Street Journal publicity; SEC investigation was dropped
  • Successfully resolved largest claim brought by an NASD against a member institution dealing with allegations of improper variable annuity switching; also, resolved all state securities actions simultaneously
  • Successfully defended a quantum meruit claim in federal court for a large automobile dealer; received favorable jury returned verdict in 16 minutes
  • Successfully obtained summary judgments and dismissals for a large Houston utility and its subsidiaries in a natural gas antitrust litigation in a state court in California and in a multidistrict litigation pending in Las Vegas federal court over 13-year period

*Certain of these matters occurred prior to joining Foley.


  • Recognized, The Best Lawyers in Texas, Best Lawyers Magazine (2019)
  • Recognized, Chambers USA
    • First-tier securities litigator (2006 – 2013)
    • Only Texas securities litigation senior statesman (2014 – 2017)
  • Recognized, “Best Lawyers in America” by Best Lawyers (2017, 2020)
    • Commercial litigation
    • Regulatory enforcement
    • Securities litigation
  • Recipient, Torch of Conscience Award, American Jewish Congress, Southwest Region (2007)


  • Southern Methodist University (J.D., cum laude, 1974)
    • Research Editor, Journal of Air Law and Commerce
    • Member, Order of the Coif and Order of the Barristers
  • Sewanee: The University of the South (B.A., cum laude, 1971)
    • Political Science
    • Member, Phi Beta Kappa


  • Texas
  • U.S. District Courts for the Northern, Eastern, Southern, and Western districts of Texas
  • U.S. Supreme Court
  • U.S. Court of Appeals
    • 5th Circuit
    • 9th Circuit
    • 10th Circuit

Professional Memberships

  • Texas Bar Commission on Lawyer Discipline (2003 – 2009)
    • Vice Chair, 2007 – 2009
  • Director, State Bar of Texas (1993 – 1996); awarded a Certificate of Merit and the outstanding third-year director award
  • President, Dallas Bar Association (1992)
  • President, Dallas Chapter, American Board of Trial Advocates (1990)
  • Member, International Society of Barristers
  • Former trustee, Dallas Bar Foundation
  • Life fellow, Dallas Bar Foundation
  • Member, Southwestern Legal Foundation
  • Member, Texas Bar Foundation
  • Member, American Bar Foundation

Community Engagement

  • Board of directors, United Way of Greater Dallas; co-chair, the de Tocqueville division of the Dallas United Way campaign cabinet
  • Member, North Texas Business for Culture and the Arts
  • Board member, Dallas County Heritage Society (Old City Park)
  • Leadership Dallas, class of 1988
  • Trustee, University of the South