Dallas Criminal Lawyers: Attorney Profile

Dallas criminal lawyer Mark T. Lassiter, J.D., is a tough, criminal defense attorney whose knowledge and experience belie his age. A former prosecutor for the Dallas County District Attorney’s office, Mark Lassiter has experience handling a wide variety of criminal cases, including:

Mark Lassiter treats every case he takes with the same seriousness and dedication – from the smallest infractions to the most serious felonies. Lassiter knows what it takes to win a trial, and he has the dedication and the tenacity to fight for the results you want.

Experience and Dedication

Mark Lassiter has a wealth of experience and qualifications he can bring to your case, including:

  • Former Dallas County Prosecutor
  • Texas Criminal Defense Lawyers Association
  • American Association for Justice
  • Texas Young Lawyers Association
  • Dallas Bar Association
  • Dallas Criminal Defense Lawyers Association
  • Dallas Association for Young Lawyers – Criminal Law Committee
  • Board Member under Dallas Criminal Defense Lawyers Association
  • Member of the Bar of the U.S. Supreme Court
  • Elected as a Texas SuperLawyer
  • Listed in the Who’s Who of America
  • Recognized as one of the Top 100 Trial Lawyers
  • Admitted to Practice in the United States 5th Circuit Court of Appeals


Mark Lassiter graduated with honors from Texas A&M University, earning his degree in Business Management. From there, he attended the South Texas College of Law, where he was a key member in their successful Mock Trial program. It was here that Mark honed the skills necessary to become a successful trial attorney.

  • J.D., South Texas College of Law
  • B.A., Texas A&M University – Business Management

Founding Member

  • Barrett Bright Lassiter Linder Perez

Officer in the U.S. Military

Airborne Infantry
Mark Lassiter began his career in the military at the age of 18, as an Airborne Infantryman, where he served as part of the 143rd Long Range Surveillance Team (LRS). The team was designed to parachute in behind enemy lines and radio crucial intelligence back to the front lines, without being detected by the enemy. This required countless hours of training and an acute attention to detail, as any small mistake could lead to the destruction of the entire team. As a member of the 143rd LRS, Mark learned how to work under strict timetables in a constantly stress-filled environment, a quality he can bring to your criminal defense case.

After serving with the 143rd Long Range Surveillance Team, Mark became a gunner in an M1 Abrams A2 tank. While training for service as a tank gunner, Mark was the honor graduate of his class.

Officer Candidate School / Judge Advocate General
While serving as a tank gunner, Mark was selected to attend Officer Candidate School, a program designed to teach enlisted soldiers the leadership and tactical skills they needed to become officers. He again rose to the challenge, receiving honors for his excellent performance.