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Areas We Serve

Texas Board of Legal Specialization in Criminal Law
DUI Defense Lawyers Association Board Certified
National College for DUI Defense Board Certified
Super Lawyers 2013-2020
Super Lawyers Top 100 in Houston & Texas
Lawyer Scientist
Avvo 10/10 Rating
Avvo Clients' Choice Award
Board Certified Advocate in Criminal Trial Law by the NBTA Foundation
AV Preeminent
Harris County Criminal Lawyers Association
National Trail Lawyer
Super Lawyers Rising Star 2010-2013

Trial-Tested, Criminal Defense in Greater Houston and Texas at Large

If you or a loved one is facing criminal charges, you need to hire the best criminal defense attorney in Houston before it’s too late. Texas courts move quickly against the accused and prosecute criminal charges without much lenience. You have a small window in which to hire your Houston criminal lawyer, who will be your last line of defense against aggressive prosecution and may represent the difference between a conviction and a Not Guilty verdict. You need the talented and aggressive attorneys from Thiessen Law Firm fighting in your corner.

Locations Thiessen Law Firm serves

Our team of trial lawyers is led by our founder, Mark Thiessen, a triple Board-Certified ACS-CHAL Lawyer-Scientist who has even more victories in court than he does awards and honors. Our firm’s reputation for success was built on meticulous preparation and tireless dedication to every single client. Thiessen Law Firm takes criminal and civil cases in:

  • Austin County
  • Brazoria County
  • Chambers County
  • Fort Bend County
  • Galveston County
  • Harris County
  • Liberty County
  • Montgomery County
  • Waller County
  • And more

Whether you’re looking for a Fort Bend County criminal defense attorney or a Harris County DWI lawyer, if you or a loved one has been arrested in Greater Houston or Texas at large, you need to contact Thiessen Law Firm for representation. Call Mark Thiessen and the attorneys at Thiessen Law Firm today at (713) 864-9000 or contact us online for a free consultation.

Thiessen Law Firm wins Not Guilty verdicts in even the toughest of cases

Thiessen Law Firm is a group of trial attorneys, not just everyday litigators, meaning we know how to take complex cases to a judge or jury and win them, not just take your fee and file your paperwork. No matter how tough the case may seem, we will not hesitate to fight for you.

Although our main office is located in Harris County, Thiessen Law Firm provides winning representation to Greater Houston and its surrounding counties as well. Whether you’re looking for a lawyer in Galveston County, Texas, or a lawyer in Austin County, Texas, Thiessen Law Firm is right here to help.

Houston DWI lawyers

Whether you’re fighting your first DWI offense in Texas or charges for intoxication manslaughter, beating DWI charges requires a special type of lawyer. The attorneys at Thiessen Law Firm have gotten 1,000+ cases dismissed, as well as over 100 Not Guilty verdicts for their clients. If you’ve been charged with DWI in Houston, call the attorneys at Thiessen Law Firm. Your future is worth the fight.

Houston criminal defense lawyers

Our team of trial lawyers thrives in complex criminal cases. Whether you’re facing charges for aggravated assault in Texas or possession with intent to distribute, our criminal defense attorneys have seen it all. Our experience taking cases to trial and arguing in a court of law could be the x-factor in securing your case a favorable outcome. Simply put: if we can’t win your case, we don’t know who can. 

If you’re looking for a Harris, Fort Bend, or Montgomery County criminal lawyer, call Thiessen Law Firm and ask us how we win.

Family lawyers in Houston

Going through a divorce can be a traumatic experience for everyone involved, and the last thing that you or your family needs is to get caught up in a heated legal dispute. Whether you need an aggressive divorce attorney or a compassionate advocate to help you navigate the legal uncertainties following a separation, Thiessen Law Firm can help.  

Houston personal injury attorneys

If you or a loved one has suffered an injury at the expense of someone else’s negligence, contact the Houston personal injury attorneys at Thiessen Law Firm to begin getting what you need to heal. 

While you focus on recovering, our attorneys will fight to get you the compensation that you deserve, negotiating with insurance companies, calculating damages, deposing witnesses, and going to trial if necessary. 

aggressive defense