Free Consultation713.864.9000

Mark Thiessen

DWI, Criminal & Civil Trial Attorney

Board Certified Advocate in Criminal Trial Law by the NBTA Foundation

Board Certified Advocate in Criminal Trial Law by the NBTA Foundation

2021

Charter Member & Board of Directors DUI Defense Lawyers Association

Board Certified in DUI Defense by the National College for DUI Defense

2020 - Lifetime

Charter Member & Board of Directors DUI Defense Lawyers Association

Top 3 DWI Lawyers in Houston

2020

Texas Super Lawyer by Thomson Reuters

Texas Super Lawyer by Thomson Reuters

2010 - Present

Top 100 Super Lawyers in Texas by Thompson Reuters

Top 100 Super Lawyers in Texas by Thompson Reuters

2019 - 2021
The only DWI Attorney selected

Top 100 Super Lawyers in Houston by Thompson Reuters

Top 100 Super Lawyers in Houston by Thompson Reuters

2017 - 2021
The only DWI Attorney selected

AVVO 2019 Client’s Choice Award

AVVO Client’s Choice Award

2019 - Present

Board Certified in DUI Defense by DUI Defense Lawyers Association

Board Certified in DUI Law by DUI Defense Lawyers Association

2018 - Lifetime

Texas Board of Legal Specialization in Criminal Defense

Board Certified in Criminal Law by Texas Board of Legal Specialization

2018 - Lifetime

DUI Defense Lawyer Association Treasurer 2021-2022

DUI Defense Lawyer Association Treasurer

2021 - 2022

DUI Defense Lawyers Association Secretary

DUI Defense Lawyers Association Secretary

2018

AV Rated as Preeminent Attorney by Martindale-Hubbell

AV Rated as Preeminent Attorney by Martindale-Hubbell

2014 - Present

ACS-CHAL Forensic Lawyer-Scientist Graduate

ACS-CHAL Forensic Lawyer-Scientist Graduate

2014 - Lifetime

The National Trial Lawyers: Top 100 Trial Lawyers

The National Trial Lawyers: Top 100 Trial Lawyers

2014 - Present

Charter Member & Board of Directors DUI Defense Lawyers Association

Charter Member & Board of Directors DUI Defense Lawyers Association

2013 - Present

AVVO Rated 10/10: Superb

AVVO Rated 10/10: Superb

2010 - Present

Axion Laboratories Forensic Chromatography Course Graduate

Axion Laboratories Forensic Chromatography Course Graduate

2012 - 2014

Lawline.com Faculty Member

Lawline.com Faculty Member

2011 - Present

Strathmore’s Who’s Who Lifetime Member

Strathmore’s Who’s Who Lifetime Member

Lifetime

LawQA Legal Advisor

LawQA Legal Advisor

2010 - Present

Texas Super Lawyer by Thomson Reuters

Rising Star - Super Lawyer by Thomson Reuters

2010 - 2013

Trial Lawyers College: Closing Argument

Trial Lawyers College: Closing Argument

May 2013

Lawline.com, Furthered 40 Attorneys in the Nation

Lawline.com, Furthered 40 Attorneys in the Nation

2012

Trial Lawyers College: Voir Dire Workshop

Trial Lawyers College: Voir Dire Workshop

April 2011

Trial Lawyers College: Psychodrama Workshop

Trial Lawyers College: Psychodrama Workshop

June 2010

State Honors

TCDLA Board of Directors

TCDLA

President’s Award

2021

TCDLA Board of Directors

TCDLA

President

2021

TCDLA Board of Directors

TCDLA

Board of Directors

2020

TCDLA DWI Trial Warrior

TCDLA DWI Trial Warrior

2016 - Present

TCDLA Associate Board Member

TCDLA Associate Board Member

2014 - 2016

TCDLA Board Member

TCDLA Board Member

2016 - 2019

American Institute of DUI/DWI Attorneys “10 Best”  Attorneys for the State of Texas

American Institute of DUI/DWI Attorneys “10 Best” Attorneys for the State of Texas

2014

TCDLA: DWI Committee Chair

TCDLA: DWI Committee Chair

2013 - 2022

TCDLA: Young Attorneys Co-Chair

TCDLA: Young Attorneys Co-Chair

2011 - 2012

The College of the State Bar of Texas

The College of the State Bar of Texas

2011 - Present

Texas Monthly: Top Young Lawyers in Texas – Rising Star

Texas Monthly: Top Young Lawyers in Texas – Rising Star

2011

Forensic Science Commission

Forensic Science Commission

2015

Local Honors

HCCLA 50th President 2020-2021

HCCLA 50th President

2020 - 2021

2019 HCCLA President-Elect

HCCLA President-Elect

2019

Vice President of HCCLA

Vice President of HCCLA

2018

H Texas Magazine: Houston’s Top Lawyer for Criminal Defense

H Texas Magazine: Houston’s Top Lawyer for Criminal Defense

2014 - Present

Houstonia Magazine Top Lawyers in Houston – Criminal Defense

Houstonia Magazine Top Lawyers in Houston – Criminal Defense

2015 - Present

HCCLA: Elected Board of Directors

HCCLA: Elected Board of Directors

2012 - Present

HCCLA: Unsung Hero Award

HCCLA: Unsung Hero Award

2012

HCCLA: Lead Counsel for Second Chair Program

HCCLA: Lead Counsel for Second Chair Program

2010 - 2015

King XXVI Krewe of Maximilian – Galveston Mardi Gras

King XXVI Krewe of Maximilian – Galveston Mardi Gras

2013

Harris County Public Defender’s Office FACT Program Mentor

Harris County Public Defender’s Office FACT Program Mentor

2013 - 2015

Organizations & Committees

aggressive defense