The Law Office of Mark T. Langston, P.C.
A Colorado Criminal Defense Law Firm


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For 34 years, Mark Langston has provided clients with smart, aggressive and creative representation in every type of criminal case, including serious felony and misdemeanor offenses, DUI and driver’s license revocation, professional disciplinary actions and post-conviction matters.

Mr. Langston has the knowledge and experience to meet the challenges created by Colorado’s many mandatory sentencing laws in cases involving crimes of violence or sexual misconduct.

Mark Langston regularly assists students and their families who are facing tough disciplinary sanctions at the University of Colorado due to even the most minor criminal charges and/or violations of the Code of Conduct.

Active In The Legal Community

To stay well-connected in the legal community and up-to-date with information, attorney Mark Langston is active in several legal organizations. He is a Life Member and past President of the Colorado Criminal Defense Bar (CCDB), the only statewide organization that is devoted solely to the defense of people accused of committing crimes and to promoting fairness in governmental policy-making and legislation on criminal justice issues.

Mr. Langston is an active member of the Boulder County Bar Association, where he has co-chaired the Criminal Law Committee, and he currently serves as Chair of both the Professionalism Committee and the Bar-Media Committee. Mr. Langston is also a member of the National Association of Criminal Defense Lawyers (NACDL), the Colorado Bar Association, the Colorado Criminal Justice Reform Coalition, Coloradans for Alternatives to the Death Penalty, the Boulder County Bar Foundation, and the Legal Aid Foundation of Colorado. Links to the websites of many of these important organizations are available on this firm’s criminal law resources page.

Personal Information

Mark Thomas Langston was born on January 3, 1959, in Columbus, Ohio, and grew up near Washington, D.C. After graduating from Winston Churchill High School in Potomac, Maryland (Class of 1977), he moved to Colorado, where he has lived since. He is married to Boulder family law attorney Carol Glassman. When not defending the criminally accused, Mark enjoys skiing, bicycling, baseball, travel, photography, music and cooking.

Mark is active in his community, and serves on the board of directors for the YMCA of Boulder Valley. Mark and his family are members or supporters of the University of Colorado Alumni Association, Boulder Shelter for the Homeless, Emergency Family Assistance, Community Food Share, and the Sister Carmen Community Center.

Contact Today For Skilled Criminal Defense

To request a consultation or learn more about our Colorado criminal defense law firm, call 303-440-0856 or send us an email.