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Providing the Aggressive Counsel You Need

Houston Criminal Defense Attorneys

When it comes to criminal defense, the Thiessen Law Firm is distinguished by our intricate knowledge of the law and related sciences – we take the time needed to understand every angle and aspect of the case in order to return the most favorable results to our clients. Led by Mark Thiessen, an aggressive, battle-tested trial lawyer known for his honestly and legal acumen, we have the experience and knowledge necessary to fight for you in a wide area of cases.

Serving Houston and all of Texas, we fight for clients in cases involving:

Call (713) 999-3959 today if you are dealing with any charge or investigation. We are here to work for you – to protect your life and freedom.

24/7 Accessibility & Knowledgeable Representation

Our clients experience the utmost professionalism when it comes to their case, including 24/7 accessibility to our team. Trust your future to a team that is well-versed in the rules of evidence, case law, and constitutional law, as well as related scientific and technical areas including anatomy, physiology, toxicology, chemistry, computer science, biology, and physics. This knowledge is invaluable in the proper preparation of your case and our ability to build a compelling argument in your favor – not to mention the ability to expose weaknesses in the prosecution’s case against you. A single, seemingly minor detail may turn the tides in your case and ensure a favorable result, and we are here to find it.

Contact a Houston Criminal Defense Attorney for a Free Consultation

Many criminal defense firms do not offer a free case evaluation, but at Thiessen Law Firm we want to make sure you have access to a consultation with a skilled professional as soon as possible. When you contact our offices, we will take the time to listen and understand your concerns. We will be honest in our assessment and will offer real solutions. If you retain our firm, we’ll fight to the end to make you whole again.

Contact our firm online or call (713) 999-3959 to arrange your free, confidential consultation.

Request Your Free Consultation

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  • "The BEST Attorney in Harris County!!"
  • "If You Want a GREAT Lawyer, Mark Thiessen is Your Man"
  • "The Best Lawyer in the Industry"
  • "Excellent Attorney to Have Represent You"
  • "Fantastic Lawyer!"
  • "Best DWI Lawyer out there!"
  • "Mark Thiessen Has The “IT” Factor"
  • "Amazing, Reliable and Superb Attorney! The Great Mark Deserves 100% Marks"
  • "You Cannot Compare Anybody with Mr.Mark!"
  • "Mark Eres Mi Hombre Que Luchó Por Mi Libertad y Justicia!!!"
  • "When you really need somebody to defend you I recommend you go hire Mark Thiessen."
Read Our Testimonials

100+

Not Guilty Verdicts
  • .171 Breath Test - Not Guilty
  • 0.119 Blood Test - Not Guilty
  • 0.158 Blood Test - Not Guilty
  • 0.146 Breath Test - Not Guilty
  • 0.176 Breath Test - Not Guilty
  • 0.184 Blood Test - Not Guilty
  • 0.10 Breath Test - Not Guilty
  • 0.194 Blood Test - Not Guilty
  • 0.16 Breath Test - Not Guilty
  • 0.199 Blood Test - Not Guilty
  • 0.140 Breath Test - Not Guilty
  • 0.098 Blood Test - Not Guilty
  • 0.127 Breath Test - Not Guilty
  • Not Guilty - Not Guilty
  • 0.144 Breath Test - Not Guilty
  • 0.172 Breath Test - Not Guilty
  • .24 Breath Test - Not Guilty
  • Intoxicated Assault - Dismissed
  • .17 Breath Test - Dismissed
  • .22 Blood Test - Dismissed Mid Trial
  • .16 Breath Test - Dismissed
  • 0.161 Blood Test - Not Guilty
  • No Test, No Accident - Not Guilty
  • .16 Blood Test - Not Guilty
  • .21 Blood Test - Not Guilty
  • 0.226 Blood Test - Not Guilty
  • Intoxicated Manslaughter - Not Guilty
  • DWI - Not Guilty
  • DWI Breath Test .10 - Not Guilty
  • 0.138 Blood Test - Not Guilty
See Our Results

Meet Our Legal Team

As one of Houston’s most distinguished criminal defense firms, Thiessen Law Firm emphasizes quality over quantity. We will get to know your case better than anyone and will utilize every tool at our disposal to secure the results you need. We are dedicated to your needs – 24 hours a day, 7 days a week. As soon as you hire us, you will receive the direct contact information on everyone on your case.

Meet Our Team
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Recent News & Updates

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    Texas Death Row 2nd Worst Prison in America

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    DWI 2nd Not Guilty - Galveston County

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    Mark Thiessen Super Lawyer

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