About Mario
Mario H. Santos is a resolute, bilingual trailblazer—equally fluent in English y en Español—who founded The Santos Law Firm, PLLC in Houston in 2017 and set a new standard for aggressive and intelligent legal advocacy ∙ “Se Habla Español” is more than a phrase; it’s a promise of clear, empathetic communication for every client.
A proud first-generation lawyer and graduate of South Texas College of Law Houston (J.D., December 2016), Mario earned his place at the bar through sheer grit—no family connections, no handouts, only discipline, consistency, and a dogged work ethic.
Since launching his practice, Mr. Santos has distinguished his firm through strategic and sharp-minded defense in high-stakes DWI, criminal defense, and personal injury cases. From day one, his office leaps into action—tactical, meticulous, and supremely prepared—investigating every angle of prosecution evidence—from dashcam and bodycam footage to witness accounts and police reports—to preserve clients’ innocence.
His leadership has earned a rock-solid reputation in Houston as an attorney who combines intellectual precision with bold execution. On his Instagram presence as “Legal Warrior | Relentless | Leader,” he personifies that ethos: a legal warrior committed to outworking his opposition every day.
Why Clients Choose Mario H. Santos
- Unrelenting diligence
Mario leaves no stone unturned—tactical, proactive, and laser-focused from the moment the firm is retained until the final outcome. - Sharp, driven intelligence
A quick study and strategic thinker, he applies thoughtful precision to dismantle prosecutions, pursue favorable outcomes, and protect clients’ freedoms. - Bold, confident leadership
He commands the courtroom and his team with unwavering presence, earning both respect and results. - Visionary ethics and humility
As a self-made first-generation lawyer, Mario’s journey is rooted in values of discipline, resilience, and the transformative power of belief in the grind. - Bilingual client-first approach
Fluent in both English and Spanish, Mario ensures every client is heard, understood, and fiercely protected.
Areas of Practice

Criminal Defense
Protecting your future and defending your rights.
Being accused of a crime can be one of the most stressful and life-changing experiences a person can face. Your freedom, reputation, and future may all be at stake. At The Santos Law Firm, PLLC, we understand what's on the line and are dedicated to protecting your rights at every stage of the process.
Criminal Defense
Protecting your future and defending your rights.
Being accused of a crime can be one of the most stressful and life-changing experiences a person can face. Your freedom, reputation, and future may all be at stake. At The Santos Law Firm, PLLC, we understand what's on the line and are dedicated to protecting your rights at every stage of the process.

you deserve the best representation
have a free consultation Today
(832) 930-2922
available 24/7 - Se Habla Español

At The Santos Law Firm, PLLC, our mission is to tenaciously defend the rights and freedoms of the accused and vigorously pursue justice for those injured due to another's negligence — with uncompromising advocacy, relentless preparation, strategic precision, unwavering and compassionate support from start to finish.
This mission is executed daily by staying on top of the latest and the greatest on the law, carefully analyzing case facts and circumstances, dissecting administered procedures, and zealously advocating a unique strategic plan on your behalf. When you engage The Santos Law Firm, PLLC, you receive assurance that the aim is to protect you, your family, your business, and most importantly, your legal rights.
have a free consultation Today
Contact us
(832) 930-2922
Location
4801 Woodway Drive, Suite
203W, Houston, Texas 77056
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