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About me

If you are searching for a drug crimes lawyer in Dallas, you should look no further than The Law Office of G. Thayer Williamson. When you come to this law office, you can rest assured in the representation you can receive because Attorney Williamson is competent, experienced, and committed to fighting for the best possible resolution for each of his clients. He received his undergraduate degree from Texas Christian University, before going on to earn his Juris Doctorate from Southern Methodist University School of Law. Upon graduation, he worked as a law clerk at Matthews, Carlton, & Stein law office, where he conducted legal research. He later worked as an associate attorney at Warmbrodt, Rachel & Associates law firm, and as an Assistant District Attorney at the Dallas County District Attorney’s Office. During his time at this law firm, Attorney Williamson was involved in more than 100 trial cases—a fact which can be of great benefit to you at this time. He opened The Law Office of G. Thayer Williamson in 2003 and offers services in family law and criminal defense. Attorney Williamson is a member of the Dallas Bar Association, the Dallas Young Lawyers Association, and the Criminal Law Committee of the Dallas Young Lawyers Association. He has been authorized to serve throughout the State of Texas, as well as in the Federal Court for the Northern District of Texas. Moreover, he regularly attends various seminars and was named in 2005 as a Rising Star™ in Super Lawyers®. Attorney Williamson has the aggression and experience you need at this pivotal time in your life, and you can rest assured in the representation you can receive when you come to this firm. For more information about the services you can procure here, pick up the phone and contact the firm today.


Photos and videos

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Practice areas


  1. Criminal Defense: 40%
    16 years
  2. DUI & DWI: 40%
  3. Family: 20%
    16 years



Hourly ($175-250/hour), Free consultation (30 minutes)

Payment types:

Cash, Check, Credit card

Attorney endorsements

2 total 

Are you an attorney? Endorse this lawyer

  • Edward Andrew Kalabus Jr.

    I endorse this lawyer. Thayer is an accomplished trial lawyer that gets results for his clients.


    Edward Kalabus Criminal defense Attorney
    Relationship: Worked together on matter

  • Jeremy Fredrick Rosenthal

    Mr. Williamson is extremely thorough in his legal analysis and his preparation. He cares greatly about his clients. I endorse him fully.


    Jeremy Rosenthal Criminal defense Attorney
    Relationship: Fellow lawyer in community

Contact info

The Law Office of G. Thayer Williamson, II

6060 North Central Expressway Suite 560
Dallas, TX, 75206-5268


TXEligible To Practice In Texas 200107/16/2016
We have not found any instances of professional misconduct for this lawyer.
Avvo contributions
Legal answers
Award nameGrantorDate granted
Rising StarSuperLawyers2005
Work experience
TitleCompany nameDuration
AttorneyLaw Office of Thayer Williamson2003 - Present
Assistant District AttorneyDallas County District Attorney's Office2002 - 2003
Association namePosition nameDuration
Federal Court Northern District of Texasmember2004 - Present
State Bar of TexasMember2001 - Present
Dallas Bar AssociationMember2003 - 2008
Dallas Criminal Defense Lawyers AssociationMember2003 - 2008
Legal cases
Case nameOutcome
The Cherry PitStill pending
State v. RKNot guilty
State v. MWNot guilty
See all legal cases 
School nameMajorDegreeGraduated
Southern Methodist University, Dedman School of LawLawJD - Juris Doctor2000
Texas Christian UniversityHistoryBA - Bachelor of Arts1996
Speaking engagements
Conference nameTitleDate
Continuing EducationEthical Considerations in Representing Individuals Accused of Sexual Offenses2007