Attorney William Harris with wife

My first exposure to the law was through my work in the military. Prior to becoming an attorney, I was a Captain in the United States Air Force who managed the development, production, and support of various information systems. Though I am grateful for this experience for a variety of reasons, one of the biggest is that it introduced me to my true passion: effecting change through the practice of law. 

In the military, we sometimes enlisted the help of attorneys, and I grew to admire their decisiveness and their ability to efficiently bring goals to fruition. So, I decided to embark on a career change, and in 2005, I received an honorable discharge to attend law school. 

My Legal Background

During law school, I gained invaluable insight from interning at the United States Attorney’s Office and from clerking for Chief Justice Rogelio Valdez of the Texas Thirteenth Court of Appeals. After graduation, I then went on to manage litigation for an insurance company, litigate commercial disputes for other businesses, and handle family and property disputes for individuals at a prominent Dallas law firm. 

I strive to help my clients with the things that matter most: their families and their livelihoods. 

Eventually, though, I became ready to set out on my own and went on to establish the Law Office of William Harris, P.C. Since that time, my practice has focused on the needs of individuals in the areas of family law, estate planning, and probate law. I also assist businesses in transactional and litigation matters and proudly accept court appointments from Dallas and Collin County probate courts as an attorney and guardian ad litem.

Beyond the Firm

Outside of my practice, my commitment to serving others holds true. Much of my free time is spent doing community outreach through my church and other civic organizations, including In the City for Good. I also proudly assist indigent clients on a pro bono basis through Legal Aid of Northwest Texas and the Dallas Volunteer Attorney Program. 

Of course, nothing is more important to me than my family. My wife and I have five children, and we all stay very active. You can often find us fishing, traveling to national parks, and enjoying other outdoor activities. And truth be told, this dedication to my family is what drew me to help my clients with domestic matters of their own. Because of my strong personal values, I always strive to do whatever it takes to make my clients’ families as healthy and happy as possible. 

Bar Admissions

  • Texas
  • U.S. District Court, Northern District of Texas 


  • Juris Doctor, with Honors  - St. Mary’s University School of Law, 2008
  • Master of Science in Finance - Bentley College, 2001
  • Bachelor of Science in Management - United States Air Force Academy, 1997

Honors & Awards

  • Order of the Barristers - Allison S. Brown Chapter of San Antonio, an academics-based award given to the top 1% of law school students who exhibit outstanding advocacy 
  • Senior Associate Editor - St. Mary’s Law Journal, Volume 39
  • Champion - Larry G. Hyden Mock Trial Competition, Fall 2007
  • Outstanding Staff Writer Award - St. Mary’s Law Journal, Volume 38 

Professional Associations & Memberships

  • Member - State Bar of Texas
  • Member - American Bar Association
  • Member - Dallas Bar Association
  • Board Member - St. Mary’s University Alumni Association, Dallas Chapter
  • Member - Texas Bar College