ABOUT
MARK A. PEREZ, ATTORNEY AT LAW
About Mark A. Perez, Attorney at Law
Since January 1992, Mark A. Perez, P.C. has served clients across Dallas, Collin, Tarrant, and Denton Counties, as well as federal courts throughout Texas. Led by attorney Mark A. Perez, our boutique law firm focuses on criminal defense and immigration law, offering trusted guidance and strong advocacy when it matters most.
With more than 35 years of courtroom experience—spanning both prosecution and defense—Mr. Perez brings deep knowledge of the Texas legal system and a tenacious approach to protecting clients’ rights.
At Mark A. Perez, P.C., we believe every client deserves respect, clarity, and committed representation. Bilingual services ensure we can serve both English and Spanish-speaking communities with equal dedication.
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Meet
OUR TEAM
When your future is on the line, you need more than just a lawyer, you need a fierce advocate supported by a team you can trust. At the Law Office of Mark A. Perez, you gain access to decades of courtroom experience, legal strategy, and honest counsel, delivered with real urgency.
Attorney at Law & Founder: Mark Perez
Mark A. Perez is a Texas-based criminal defense attorney with over 35 years of experience representing clients in cases involving drug charges, violent crimes, sex offenses, and federal cases. He is dedicated to guiding people through the complexities of the legal system and strives to achieve the best possible outcomes for his clients.
In addition to criminal defense, he also handles immigration matters for individuals and families. Perez serves clients throughout Texas, including Dallas, Allen, McKinney, Sherman, and Fort Worth. He earned both his B.A. in Government at the University of Texas at Austin in 1979 and his J.D. from the University of Texas at Austin in 1989.
Adrian Dunn
Immigration Paralegal
Adrian Dunn has more than 20 years of experience in immigration law and also brings a background in criminal defense. She has been with Mark Perez, P.C. for over 12 years and previously worked directly within the immigration system, giving her unique insight into the process.
Fully bilingual in Spanish and English, Adrian is passionate about helping individuals and families achieve legal status while also supporting clients in criminal matters. In her free time, she enjoys kayaking and spending time outdoors with loved ones.
Gabriela "Gaby" Narvaez
Criminal Paralegal
State & Federal
Gabriela “Gaby” Narvaez has over 18 years of experience in law, focusing on criminal defense at both the state and federal level.
She earned her Bachelor’s degree in Business Administration and has been an integral part of Mark Perez, P.C. for the past 10 years.
Fully bilingual in Spanish and English, Gaby is known for her dedication, reliability, and passion for helping clients navigate the criminal justice system. Outside the office, she enjoys traveling, documentaries, and family time.
Clear Guidance
We cut through legal confusion with direct, honest advice. You’ll always understand your options, your risks, and your next move.
Aggressive Defense
With decades of trial experience and a prosecutor’s insight, I build tough, strategic defenses designed to win—not just negotiate.
No Nonsense
No fluff, no false promises. I tell you the truth, fight smart, and do it all without wasting your time, money, or trust.