Attorney Deandra M. Grant

Deandra M. Grant - Attorney at Law

Deandra M. Grant was included in the list of Super Lawyers® for 2011, 2012, 2014, 2015, 2016 and 2017. 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.


Deandra 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.

Deandra'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 20 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

Deandra 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.

Deandra 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. Deandra completed a Graduate Certificate in Forensic Toxicology from the University of Florida’s College of Veterinary Medicine and a Masters Degree in Pharmaceutical Science - Concentration in Forensic Science from the University of Florida’s College of Pharmacy in 2016. Deandra 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.

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

Achievements and Recognition

Professional Organizations & Memberships


Trinity University (1990)

SMU School of Law

Additional Work

Award Microscope Lawyer Scientist Award

The Right Attorney

Can Make All The Difference In The Outcome Of Your Case

  • Former DWI Prosecutor
  • 10/10 "Superb" Avvo Rating
  • Included on Super Lawyers® List
  • AV® Rated by Martindale-Hubbell®
  • 20+ Years' Criminal Law Experience
  • National Trial Lawyers: Top 100 Lawyers

Contact Hamilton Grant PC Today

We understand how the opposition thinks. Put our knowledge, skill set, and experience to work for you. Call (972) 943-8500 today to get started. We would be proud to offer you the zealous advocacy you require in order to combat your criminal charges.

  • Please enter your name.
  • This isn't a valid email address.
    Please enter your email address.
  • This isn't a valid phone number.
    Please enter your phone number.
    You entered an invalid number.
  • Please select an option.
  • Please enter a message.