Houston, Texas Lawyer ,Mark Ryan Thiessen , Lawyer Guide

Mark Ryan Thiessen - Houston, Texas


Mark Thiessen is a criminal trial legal professional and the Chairman/CEO of the Thiessen Law Office in Houston, Texas. Mark is Board Certified in Criminal Law by using the Texas Board of Legal Specialization and Board Certified in DUI Law with the aid of the DUI Defense Lawyers Association. Mark earned the American Chemical Society-Chemistry and the Law (ACS-CHAL) Forensic Lawyer-Scientist designation, that's the highest form of medical reputation to be had for attorneys. Mark is a common criminal seminar lecturer, writer of numerous posted legal articles, and a faculty member for diverse organizations. Mark is the cutting-edge DWI Committee co-chair and at the Board of Directors for Texas Criminal Defense Lawyers Association (TCDLA), at the Board of Directors for Harris County Criminal Lawyers Association (HCCLA) and a Charter has membership and Director for DUI Defense Lawyers Association (DUIDLA). Mark is a 6 time Texas Super Lawyer and within the Top one hundred Super Lawyers in Houston (2017 & 18). In 2019, Mark turned into the best crook attorney to be named to the Top one hundred Super Lawyers in all of Texas. Mark has received DWI instances from overall refusals up to quadruple intoxication manslaughter.
Mark’s reputation for fearlessness extends past his presence in the court docket. In his unfastened time, he competes as a Brown Belt in Brazilian jiu-jitsu, Muay Thai, and participates in competitions consisting of the Warrior Dash and Tough Mudder. He is also an avid snow skier, wake boarder and tennis participant.



Legal Issues

    Criminal Law
    Criminal Appeals, Drug Crimes, Expungement, Fraud, Gun Crimes, Internet Crimes, Sex Crimes, Theft, Violent Crimes
    DUI & DWI
    Cannabis & Marijuana Law
    Marijuana Business Formation, Medical Marijuana
    Personal Injury
    Animal & Dog Bites, Brain Injury, Car Accidents, Construction Accidents, Motorcycle Accidents, Premises Liability, Truck Accidents, Wrongful Death


  • Free Consultation


Board Certified in DUI Law
National College for DUI Defense

Board Certified in Criminal Defense
Texas Board of Legal Specialization

Board Certified in DUI Defense
DUI Defense Lawyers Association


  • English: Spoken, Written
  • Spanish: Spoken, Written

Accepted Jurisdictions

Colorado Jurdictions
Since 2016
5th Circuit Jurdictions
5th Circuit
Since 2010
U.S. Supreme Court Jurdictions
U.S. Supreme Court
Since 2010
Texas Jurdictions
Since 2003


  • Lawyer/CEO
    Thiessen Law Office
  • Trial Lawyer
    Trichter and Murphy
  • Lawyer
    Brown Sims, P.C.
  • Lawyer
    Bell Ryniker Letourneau & Nork


South Texas College of Law
J.D. | Law
Graduation year: 2003
University of Hawai i at Manoa William S. Richardson School of Law
Environmental and Admiralty Law
Graduation year: 2002
Texas Christian University
B.B.A. | Marketing
Graduation year: 2000
Trinity University

Graduation year: 1998

Video Call/Chat Support

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