Mark Thomas Langston

Top rated criminal defense attorney in Boulder, Colorado

The Law Office of Mark T. Langston, P.C.
Mark Thomas Langston
The Law Office of Mark T. Langston, P.C.

Practice Areas: Criminal defense; view more

Licensed in Colorado since: 1985

Education: University of Colorado Law School

Selected to Super Lawyers: 2006 - 2010, 2022 - 2023

The Law Office of Mark T. Langston, P.C.

1790 38th St
Suite 300
Boulder, CO 80301 Visit website


Attorney Mark Thomas Langston is the founder and president of The Law Office of Mark T. Langston, P.C., in Boulder, Colorado. A top-ranked trial lawyer with more than 37 years of legal experience, Mr. Langston focuses his practice on criminal defense and the collateral consequences of being accused of a crime.  He provides unmatched counsel and support to a diverse range of clients throughout the greater Boulder metro and surrounding areas who have legal needs involving any of the following:

·       Criminal defense for all types of felony and misdemeanor offenses

·       DUI and driver's license revocation

·       Post-conviction relief

·       Professional disciplinary actions

·       University of Colorado student conduct and disciplinary proceedings

A long-time resident of Boulder County, Mr. Langston has a genuine concern for the legal issues that affect the members of his community, and he has gained a reputation for his impassioned advocacy and aggressive approach to helping his clients obtain the favorable outcomes they seek for their pressing and complex legal challenges as efficiently and cost-effectively as possible.

Over the course of his legal career, he has achieved a long record of securing acquittals, dismissals and reductions of charges for the accused while assisting many others with their appeals and post-conviction relief matters. Honored for his outstanding professionalism and service, Mr. Langston has earned consistent top rankings and endorsements from his peers, including an AV Preeminent peer review rating* from Martindale-Hubbell, and he has received numerous testimonials and referrals from his satisfied clients.

A 1981 graduate of the University of Colorado at Boulder, Mr. Langston returned to his alma mater and obtained his Juris Doctor from the University of Colorado School of Law in 1985. He is admitted to practice before the U.S. District Court for the District of Colorado as well as the U.S. Court of Appeals for the 10th Circuit.

Mr. Langston is a member of the National Association of Criminal Defense Lawyers, the Colorado Bar Association and the Colorado Criminal Defense Bar, where he once served as president. He is also a member of the Boulder County Bar Association, and he currently serves as chair of the organization's Professionalism Committee.

*AV®, AV Preeminent®, Martindale-Hubbell Distinguished and Martindale-Hubbell Notable are certification marks used under license in accordance with the Martindale-Hubbell certification procedures, standards and policies. Martindale-Hubbell® is the facilitator of a peer review rating process. Ratings reflect the anonymous opinions of members of the bar and the judiciary. Martindale-Hubbell® Peer Review Rating™ fall into two categories – legal ability and general ethical standards.

Practice areas

Criminal defense

Focus areas

Assault & battery, Criminal fraud, Criminal law, Drug & alcohol violations, Expungement, Felony, Juvenile delinquency, Misdemeanor, Motor vehicle offenses, Probation, Sex offenses, Theft, Criminal domestic violence

  • 100% Criminal defense

First Admitted: 1985, Colorado

Professional Webpage:

Educational Background:
  • J.D., University of Colorado, 1985
  • B.A., University of Colorado (Biology), 1981
Scholarly Lectures/Writings:
  • Panel presentation to law students on the principles of professionalism., Chair, CU Law School Professionalism Panel, 2021
  • Panel presentation to law students on principles of professionalism., Chair, CU Law School Professionalism Panel, Legal Education, 2019
Representative Clients:
  • Medical professional charged with misdemeanor and felony domestic violence offenses., 2022
  • College professor charged with DUI and weapons offenses, 2021
  • University of Colorado Students, 2022
  • Lawyer charged with criminal offense.  Case dismissed., 2020
  • Dentist charged with DUI.  Reduced to Careless Driving., 2020
  • Felony domestic violence charge dismissed, 2022
  • Felony sexual exploitation of a child charge dismissed, 2022
  • Obtained referrals of felony cases to Mental Health Diversion Program., 2021
  • Deferred judgment for Indecent Exposure., 2021
  • Deferred judgment and sentence for Unlawful Sexual Contact., 2020
  • Felony Convictions Sealed, 2020
  • Felony drug distribution charge reduced to misdemeanor possession., 2019
  • Not Guilty Verdict:  Child Abuse, 2019
  • Not Guilty Verdict:  Careless Driving with Serious Bodily Injury, 2019
  • Felony menacing reduced to disorderly conduct., 2018
  • , Bar Register of Preeminent Lawyers, Martindale-Hubbell, 2022
  • , "Top 100" Trial Lawyer, National Trial Lawyers, 2022
  • , AV Peer-Review Rating, Martindale-Hubbell, 2022
  • , Google 5-Star Rating,, 2022
  • , Avvo 10.0 Rating,, 2022
Pro bono/Community Service:
  • Director, YMCA of Northern Colorado, 2022
  • Boulder County Bar Association, Free Legal Clinic, 2019
Bar/Professional Activity:
  • Chair, Professionalism Committee, Boulder County Bar Association, 2022
  • National Association of Criminal Defense Lawyers, 2022
  • Life Member, Colorado Criminal Defense Bar, 2022
  • Former president, Colorado Criminal Defense Bar
Industry Groups:
  • Assault
  • Burglary/Trespass
  • Child Abuse
  • Domestic Violence
  • Drug Offenses
  • DUI/Driver's License Revocation
  • Fraud/Theft
  • Harassment/Stalking
  • Juvenile Delinquency
  • Murder/Homicide
  • Post-Conviction Relief
  • Professional Disciplinary Actions
  • Property Crimes
  • Record Sealing
  • Sex Crimes
  • University Of Colorado Student Conduct Violations
  • Violent Crimes And Weapons Offenses
  • White Collar And Computer Crimes

Office location for Mark Thomas Langston

1790 38th St
Suite 300
Boulder, CO 80301

Phone: 303-440-0856


7 Years Super Lawyers
  • Super Lawyers: 2006 - 2010, 2022 - 2023

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