John T. "Trey" Cox III

Trey Cox: Litigation Partner at Gibson Dunn in Dallas, Texas

With over three decades of courtroom experience as a litigation partner with Gibson Dunn, Trey Cox is an accomplished and sought-after advocate and trial lawyer. His career has been dedicated to resolving complex business disputes, from high-profile cases involving trade secrets and securities fraud to those centered around breach of fiduciary duty and partnership disputes.

Practice Areas

• Energy Regulatory Law
• Commercial Litigation
• Litigation - Intellectual Property
• Litigation - Securities

Schools & Education

Trey Cox received his B.A. magna cum laude from Washington & Lee University, and his J.D., from the University of Virginia School of Law.

After graduating, he clerked for Honorable Jacques L. Wiener Jr. of the United States Court of Appeals for the Fifth Circuit.

Awards & Recognitions

• Lawyer of the Year: Energy Regulatory Law, Dallas/Fort Worth (2026)
• Recognized as a 'Best Lawyer Under 40' by D Magazine for five consecutive years from 2012 to 2016
• Listed as a 'Texas Super Lawyer' by Law & Politics (as seen in Texas Monthly) from 2004 to 2011
• Selected by the Dallas Business Journal as a 'Defender'
• Recognized as one of the 'Top 10 Metroplex Litigators Worth Having on Your Side'
• AFFILIATED WITH:
  • Firms: Gibson, Dunn & Crutcher LLP