Jarrett P. Ambeau

Criminal Defense Attorney in Baton Rouge | Expert in Forensic DNA Interpretation
Jarrett Ambeau is a highly respected criminal defense attorney based in Baton Rouge, Louisiana, and the founder of The Ambeau Law Firm. With over 14 years of experience and more than 50 felony jury trials to verdict, Jarrett has built a reputation as a dedicated trial lawyer who fights relentlessly for his clients’ rights. His practice focuses on serious criminal charges, including violent crimes, homicide, sexual assault, and complex forensic cases.
What sets Jarrett apart is his unique expertise as a court-qualified expert in Forensic DNA Interpretation. He holds a Master of Science in Forensic DNA and Serology from the University of Florida and has testified as a DNA expert in multiple high-profile cases throughout Louisiana and beyond. Jarrett regularly teaches other attorneys and legal professionals how to interpret and challenge DNA evidence in court.
A proud U.S. Army veteran, Jarrett served in the JAG Corps’ Trial Defense Service, including a combat deployment to Iraq, where he supported U.S. soldiers as part of their criminal defense team. His deep military experience informs his work ethic, discipline, and commitment to justice.
Jarrett earned his law degree from the Paul M. Hebert Law Center at LSU, where he was a two-time finalist in the Ira S. Flory Moot Court competition and a member of the Moot Court Board. Before law school, he completed his undergraduate philosophy degree while deployed to Iraq with the U.S. Military.
Jarrett Ambeau is widely recognized for his ability to integrate cutting-edge forensic science into criminal defense strategy. He has co-counseled and consulted on dozens of cases involving DNA mixture interpretation, probabilistic genotyping, low copy number DNA, and other forensic disciplines. His work has been featured in academic CLEs, national forensic education programs, and the Netflix documentary “I Just Killed My Dad.”
If you are searching for a top criminal defense attorney in Baton Rouge, Jarrett Ambeau offers unmatched trial experience, scientific insight, and a warrior’s dedication to protecting the accused.
Honors & Service
- Observer – AAFS, Academy Standards Board, DNA Consensus Body, 2022 to present
- Member – National Forensic College, DNA Leadership Group, 2020 to 2024.
- Member – American Association for Laboratory Accreditation, 2018 to present.
- Chair – LACDL Annual Forensic Science CLE 2017 – 2018
- Special advisor – Code of Criminal Procedure Revision Committee, 2013.
- Co-chair – LACDL DWI CLE 2013
- Member – Louisiana Bar Association – Criminal Justice Committee, 2011 to present.
Education
- Master of Science in Pharmacy, Forensic DNA and SerologyUniversity of Florida- Graduate School
- Juris DoctoratePaul M. Hebert Law Center, Louisiana State University- Graduate School2008
- Bachelor of Civil LawsPaul M. Hebert Law Center, Louisiana State University- Undergraduate School2008
- Bachelor in Science, PhilosophyThomas Edison State University- Undergraduate School2005
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