Sam H. Lock

Sam H. Lock is a seasoned criminal defense attorney with more than two decades of experience representing clients across Central and South Texas. His practice focuses on defending individuals facing serious state and federal criminal charges, combining courtroom skill, legal analysis, and disciplined advocacy to protect client rights and pursue effective resolutions.

Sam earned his Bachelor of Arts degree from Texas A&M University before obtaining his Juris Doctor from St. Mary’s University School of Law. His formal legal education emphasized litigation, evidence, and criminal procedure, providing a strong academic foundation for handling complex criminal matters in both state and federal courts.

Sam began his legal career as an Assistant Bexar County prosecutor in 1999, gaining valuable insight into the development of criminal cases and trial strategy. In 2000, he established his own law firm and has since dedicated his practice to criminal defense, representing clients throughout Texas for more than twenty-five years.

Sam’s practice covers a broad range of criminal matters, including federal and state drug charges, DWI and DUI offenses, violent crimes, white collar crimes, weapons charges, and probation violations. He has tried cases ranging from minor misdemeanors to homicide, applying tailored defense strategies to each matter.

In addition to trial work, Sam is frequently recognized for his professional leadership and legal knowledge. He has been honored by peer organizations and legal publications and regularly lectures at continuing legal education seminars, helping other attorneys stay informed on developments in criminal law and procedure.

Throughout his career, Sam has represented individuals from all backgrounds, focusing on clear communication and thorough preparation. His approach emphasizes personal attention, strategic planning, and unwavering advocacy, helping clients navigate complex criminal proceedings with confidence and informed legal guidance.

Sam H. Lock continues to defend clients in courts across Texas and the United States, offering experienced representation in high-stakes criminal cases. His long-standing commitment to criminal defense underscores a practice built on knowledge, dedication, and results-oriented legal advocacy.

Law Office Affiliations

• Attorney, The Law Offices of Sam H. Lock
• Board of Directors, Texas Criminal Defense Lawyers Association
• Board of Directors, San Antonio Criminal Defense Lawyers Association
• Member, American Inns of Court William Session Inn
• Member, State Bar of Texas

Licensed State

• Texas

Education

• St. Mary’s University School of Law
  Juris Doctor (JD)
• Texas A & M University
  Bachelor of Arts (BA)

Awards & Badges