Mark Diaz & Associates

Mark Diaz & Associates is a criminal defense law firm serving clients in Galveston County and the Greater Houston area. Criminal defense is the exclusive focus of the firm, allowing attorneys to devote their full attention to protecting the rights and interests of individuals facing criminal accusations. Led by Mark Diaz, a criminal defense attorney with nearly 30 years of experience, the firm handles cases ranging from misdemeanor offenses to complex felony and federal criminal prosecutions. This focused approach allows the law firm to provide strategic representation tailored to the unique circumstances of each case.

Mark Diaz & Associates has built a reputation for aggressive advocacy, thorough preparation, and personal attention. The firm represents clients charged with DWI offenses, drug possession, drug trafficking, drug manufacturing, assault and battery, domestic violence, sexual assault, homicide, white collar crimes, burglary, robbery, theft, federal criminal defense matters, and expungements. Additional practice areas include personal injury claims involving auto accidents and plant or refinery accidents. Every matter is approached with careful analysis and a commitment to developing a strong defense strategy from the earliest stages of an investigation or arrest.

Mark Diaz & Associates emphasizes direct attorney involvement throughout the legal process. Unlike firms that delegate significant responsibilities, the law firm remains closely engaged in each case from start to finish. This dedication helps clients navigate the criminal justice system with confidence during some of the most challenging periods of their lives. The firm understands that criminal allegations can threaten freedom, employment opportunities, and personal reputation, making timely and effective legal representation essential.

Mark Diaz & Associates is supported by a team of experienced attorneys who share a commitment to achieving favorable outcomes through preparation, strategy, and relentless advocacy. The firm's work and legal insights have been recognized by media outlets including CNN, NBC News, CBS News, the Houston Chronicle, and Galveston County’s The Daily News. Client testimonials highlight successful outcomes that include dismissals and not guilty verdicts, reflecting the firm's dedication to protecting client rights and pursuing the strongest defense available under Texas law.