Deandra M. Grant

Managing Partner

Deandra M. Grant

Managing Partner

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Achievements & Recognition

  • Texas Super Lawyer – 2011, 2012, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023
  • D Magazine’s Best Lawyers in Dallas – 2010, 2011, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023
  • Texas’ Top Rated Lawyers – 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022
  • Dallas Best Criminal Defense Lawyers 

Professional Organizations & Memberships

  • State Bar of Texas
  • DUI Defense Lawyers Association (Executive Director, President-Emeritus, Charter Member)
  • Texas Criminal Defense Lawyers Association (Board of Directors 2011-16)
  • Dallas Criminal Defense Lawyers Association (President 2022, President-elect 2021, Treasurer 2020, Board of Directors 2007-19)
  • Collin County Criminal Defense Lawyers Association
  • Dallas Bar Association
  • Denton County Criminal Defense Lawyers Association
  • National Women Trial Lawyers Association
  • Dallas Women Lawyers Association (Board of Directors 2021-2022)
  • NORML Legal Committee
  • American Academy of Forensic Sciences
  • American Chemical Society – Chemistry and the Law Division
  • American Association for the Advancement of Science
  • American Association for Clinical Chemistry
  • South Carolina Association of Criminal Defense Lawyers
  • Ohio Association of Criminal Defense Lawyers

Additional Work

  • Co-Author of The Texas DWI Manual (2013-present)
  • Forensic Sobriety Assessment Certification
  • NHTSA Standardized Field Sobriety Testing course
  • NHTSA Standardized Field Sobriety Testing Instructor course
  • Drug Recognition Expert (DRE) course
  • Intoxilyzer 5000 Operator and Maintenance Technician course
  • Certificate, Forensic Chromatography: Theory and Practice
  • Certificate, Forensic Analysis of Solid Drugs
  • Certificate, Forensic Principles of DUID
  • ACS-CHAL Forensic Lawyer-Scientist designation
  • Faculty, Borkenstein Drug Course (2019 – present)

About Deandra

Attorney Deandra M. Grant was included in the list of Super Lawyers® for 2011- 2012, 2015 – 2022. Super Lawyers® is an attorney rating service that is nationally recognized throughout the legal community. After performing exhaustive and rigorous research by an independent research team, they announce their list of highly capable, trustworthy, and competent attorneys in Super Lawyers® Magazine and online. The list represents no more than 5% of the attorneys in Texas.

Attorney Grant was also AV® Preeminent ™ Rated by Martindale-Hubbell®, which is the highest rating an attorney can achieve. She was given the AV® Rating for her outstanding professional achievements in the field of DWI law and her contributions to the legal community. She’s also been rated 10.0 by both AVVO and Justia.

Deandra began work on The Texas DWI Manual in 2011 for James Publishing. The first edition was released in 2013. It is updated annually.


Attorney Grant graduated in 1990 from Trinity University in San Antonio with a B.S. in Business Administration. She earned her law degree from the SMU School of Law and was licensed by the State Bar of Texas in 1993. Having spent her last year of law school as an intern with the Dallas County District Attorney’s Office, she began work there as an assistant district attorney in January 1994.

Attorney Grant’s tenure as a prosecutor focused on DWI prosecution. In 1995, she founded her own firm and began defending citizens accused of DWI. She has practiced criminal defense for over 25 years and has represented hundreds of Texans charged with criminal offenses, including DWI, violent felonies, and sex crimes. As a former prosecutor, she knows firsthand how to counter the prosecutor’s evidence and strategy.

Operator and Testing Experience

Attorney Grant has spent hundreds of hours in training courses and programs related to DWI defense. She has participated in numerous ”dosing” experiments in which people are given specific amounts of alcohol over certain time periods and then tested to see the effect of the alcohol on their mental and physical capabilities. She attended and successfully completed the operator certification course for the Intoxilyzer 5000, the breath-test machine used in Texas. She learned how to operate the machine and the science behind it. She also participated in experiments related to the inaccuracy of the machine.

Attorney Grant has completed the certification course to administer standard field sobriety testing, the same National Highway Traffic Safety Administration training course that teaches police officers nationwide how to identify drunk drivers during traffic stops. She has also completed the SFST Instructor course and taught the SFST practitioner course to other attorneys. In 2008, she completed coursework in Atlanta, Georgia, on DWI forensic blood and urine testing.

In 2011, she completed a week-long course on forensic chromatography in Chicago at Axion Labs. At the conclusion, she received a certificate from the American Chemical Society in forensic chromatography. In 2012, she became a member of both the American Chemical Society and the American Academy of Forensic Science. In 2015, she earned The ACS-CHAL Forensic Lawyer-Scientist Designation. Attorney Grant completed a Graduate Certificate in Forensic Toxicology from the University of Florida’s College of Veterinary Medicine and a Master’s Degree in Pharmaceutical Science – Concentration in Forensic Science from the University of Florida’s College of Pharmacy in 2016. In 2019 she joined the faculty at Axion Labs as an Assistant Chromatography Instructor. Attorney Grant is a national speaker and teacher on topics including trial skills, jury selection, cross examination, field sobriety tests, and forensic breath and blood alcohol testing.

On a personal note, Deandra is a wife, the mom of two and has 5 rescue dogs. She spends a great deal of time working with dog rescues and is Vice President of Living the Doxie Dream Rescue & Sanctuary, located in Royse City, Texas. Deandra is a self-proclaimed “wine snob” who collects wine. She also loves to paint and you can find many of her paintings of the walls of Hamilton Grant’s various offices.

For her entire Curriculum Vitae (‘Resume’), click here.

Attorney Deandra Grant was also named Lawyer of the Month by Attorney Law Magazine. To read more please click here.

Attorney Grant has been selected to Super Lawyers 10 years in a row! Read more here.

Get the song “Deandra” on iTunes


Graduate Certificate in Forensic Toxicology

University of Florida, College of Veterinary Medicine – Graduate School

Gainesville, FL 2016

Masters in Pharmaceutical Science – Concentration in Forensic Science

University of Florida, College of Pharmacy – Graduate School

Gainesville, FL 2016

Juris Doctorate | Intern with the Dallas County District Attorney’s Office

SMU School of Law – Graduate School

Dallas, TX 1993

Bachelor of Science in Business Administration/Finance

Trinity University – Undergraduate School

San Antonio, TX 1990

Plano Senior High School

High School

Plano, TX 1986