About
Thomas A. Valdez is a Wyoming business lawyer and a managing partner at Chapman Valdez & Lansing Attorneys At Law, with extensive experience in trial and litigation matters. His practice includes auto and trucking accidents, workplace injuries, wrongful death, oilfield accidents, and other plaintiff injury claims. He also handles commercial litigation, employment law, criminal defense, family law, and disputes involving governmental entities. He has represented clients in courts throughout Wyoming and has appellate experience before the Wyoming Supreme Court.
Thomas earned his B.S. in Finance from the University of Wyoming. He later attended the University of Kansas School of Law, where he received his J.D. His finance education and earlier work as a corporate and cost accountant gave him experience reviewing balance sheets, profit and loss information, and other financial documents. This background supports his work on business, commercial, and financially complex legal matters.
Thomas began his legal career as a law clerk for the Honorable Thomas F. Neville of Idaho’s Fourth Judicial District. He later worked as an associate handling insurance defense, commercial litigation, employment law, tax and estate planning, and business transactions. After returning to Wyoming, he continued building a broad civil and commercial litigation practice. He has practiced in Wyoming for more than two decades and has represented thousands of state residents.
Thomas A. Valdez has served as a managing partner since 2006 and maintains a varied litigation and advisory practice. He is admitted in Wyoming, Idaho, and Colorado and has held memberships in several professional associations. His experience extends to representing corporations and institutions facing legal, administrative, and regulatory issues. He was voted the No. 1 attorney in the Casper Star-Tribune Readers’ Choice Awards in 2016 and 2018.
Law Office Affiliations
- Managing Partner, Chapman Valdez & Lansing, Attorneys, and Counselors at Law
- Member, Wyoming State Bar
- Member, Colorado Bar Association
- Member, Idaho Bar Association
Licensed State
- Wyoming
- Idaho
- Colorado
Education
- University of Kansas School of Law
Juris Doctor (JD) - University of Wyoming
Bachelor of Science (BS)



- Antitrust & Trade Law
- Aviation & Aerospace
- Contracts & Agreements
- Professional Liability
- DUI & DWI
- Speeding & Traffic Tickets
- White Collar Crime
- Employee Benefits
- Sexual Harassment
- Workers' Compensation
- Probate
- Medical Malpractice
- Motorcycle Accidents
- Divorce & Separation




