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Timothy S. Posey Shareholder

T 918-594-0669 | F 918-594-0505 |

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Tim Posey is chair of Hall Estill's Indian Law practice and has an AV rating through Martindale-Hubbell. He is ranked Band 1 by Chambers USA in Native American Law, has been named a local litigation star by Benchmark Litigation. Further, he has been recognized as a Best Lawyer in America in Native American Law and was named the Best Lawyers 2022 Tulsa Native American Law Lawyer of the Year. 

Tim is an enrolled member of the Muscogee (Creek) Nation and has significant experience in the area of Federal Indian Law. He has handled numerous cases and issues of first impression in Indian Law, including gaming, motor fuel and tobacco compacts and cooperative agreements. He has served as an Assistant Attorney General for the Creek Nation Legislative Branch where he was responsible for numerous jury and bench trials in a wide array of cases. 

Tim was responsible for handling the first Joint Venture between two federally recognized Indian Tribes that were awarded federal contracts with the U.S. Department of Energy. While serving as Legislative Counsel, he was responsible for drafting legislation, regulations and related litigation.

Tim has also served as counsel on Amicus Briefs heard before the U.S. Supreme Court. Tim handles numerous employment, healthcare and contract related matters. He also serves as General Counsel for a large hospice company operating in seven states with approximately 1,500 employees.


  • University of Oklahoma College of Law (J.D., 1989)
  • University of Oklahoma (B.A., with distinction, 1986)


  • Cherokee Nation
  • Muscogee (Creek) Nation
  • Oklahoma
  • U.S. Court of Appeals for the Tenth Circuit
  • U.S. District Court for the Eastern, Northern and Western Districts of Oklahoma
Legal Experience
  • 2005 - Present Hall Estill
Community Involvement
  • YMCA, Owasso, Former Advisory Board member
Professional Involvement
  • Oklahoma Bar Association
  • Tulsa County Bar Association
  • Muscogee (Creek) Nation Bar Association
  • Cherokee Nation Bar Association
  • Supreme Court Justice, Sac & Fox Nation Supreme Court
  • Member, Oklahoma Captive Insurance Advisory Board
Teaching/Lecture Experience
  • Presenter - Doing Business In Indian Country, 2003 & 2004, Oklahoma State University - Okmulgee Campus, "U.S. Supreme Court Update" and "Conducting Business Transactions with Indian Tribes."
  • Presenter - Sovereignty Symposium, 1997, 1998, 2000 & 2001, topics included, "Jurisdictional issues involving Tribes, Employment Law in Indian Country, Gaming, Tribal Court Jurisdiction and Application of the National Labor Relations Act to Indian Tribes."