Dallas DWI Lawyer – Attorney Profile

Dallas DWI Attorney Mark Lassiter, J.D. is a knowledgeable young criminal defense attorney who concentrates his practice in DWI defense.

Mark graduated from South Texas College of Law where he excelled in the top Trial Advocacy law school in the country. He was selected to serve as a Trial Advocate in just his first year of law school.

Mark continued to hone his trial skills by joining the Dallas County District Attorney’s office as an Assistant District Attorney on his graduation from law school. There, as a prosecutor Mark Lassiter handled countless cases including DWI, Assault, and Drug Offenses. During his tenure at the District Attorney’s Office Mark developed a reputation as an excellent trial attorney gaining respect from his peers at the DA’s office and defense attorneys alike.

Before Mark went to law school he attended Texas A&M University graduating with high honors and a degree in Business Management.

Mark T. Lassiter also has served the Army faithfully for 10 years. He began his career in the Army at 18 years old as an Airborne Infantryman. There he served as part of the 143rd Long Range Surveillance Team (LRS). This team was designed to parachute in behind enemy lines and radio crucial intelligence back to the front lines, all without being detected. This required countless hours of training and attention to detail because any small mistake could lead to destruction of the entire team. It was here that Mark learned what it means to work under timetables in a stress filled environment. He learned what it takes to get things done and he will put that knowledge to work for you.

Lassiter continued his career in the Army by becoming an M1AbramsA2 tank gunner. During the course of his training on this battle tank Mark received an award for the honor graduate of his class.

While serving as a tank gunner Lassiter was selected to attend Officer Candidate School. This school transformed enlisted soldiers into officers. Lassiter again received honors for his excellent performance throughout his attendance at Officer Candidate School. From there Mark was selected to serve as a member of the JAG Corp due to his legal expertise. After 10 years of faithful service Mark retired from active service.


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


  • Texas Criminal Defense Lawyers Association
  • American Association for Justice
  • Texas Young Lawyers Association
  • Dallas Bar Association
  • Dallas Young Lawyers Association

Founding Member

  • Barrett Bright Lassiter Linder

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