Tammy Barrett

Tammy D. Barrett

Tammy D. Barrett has over 20 years of legal experience.  Before joining GableGotwals, she served as a law clerk to the Honorable Gregory K. Frizzell (2007-2008) and the Honorable Sam A. Joyner (1995-2007), on the United States District Court for the Northern District of Oklahoma.  She represents both privately-held and public companies in a wide range of litigation matters, and has experience in antitrust actions, complex contract cases, business torts, class actions, securities litigation, director and officer liability actions, oil & gas cases, employment cases, and social security law.

Tammy was born in Wichita, Kansas but lived in five different states before attending law school in Oklahoma.  Tammy is active in Girl Scouts, serving as an Assistant Troop Leader, and has also been involved in a variety of community organizations including American Inns of Court, various Tulsa County Bar Association Committees, and a local youth baseball organization.

Tammy’s recent experience includes:

  • Successfully obtaining trial court decision and defending summary judgment on appeal in favor of client in a complex commercial contract action
  • Successfully defending favorable trial court jurisdictional holdings at appellate level in complex litigation action
  • Successfully assisting in obtaining preliminary injunctive relief in identity theft action


J.D. with honors, University of Oklahoma College of Law, 1990

B.S. in English and Social Science, Emporia State University, 1987


Best Lawyers
Appellate Practice
Energy Law


Oklahoma Bar Association
Tulsa County Bar Association