Joseph P. St. Louis

Joseph P. St. Louis is a criminal defense lawyer at St. Louis Huffman Law who represents clients facing misdemeanor and felony charges in Arizona state and federal courts. His practice focuses on DUI, drug crimes, violent offenses, sex crimes, gun charges, domestic violence, and serious felony matters. He has tried more than 200 cases before juries and has argued appeals before the Arizona Court of Appeals, Arizona Supreme Court, and Ninth Circuit.

Joseph earned his J.D. from the University of Arizona College of Law. He received his B.A. from the University of Arizona with departmental honors. His legal education laid the foundation for a career centered on criminal defense, courtroom advocacy, and constitutional protections. He later completed specialized training in standardized field sobriety testing, forensic chromatography, and scientific issues connected with blood alcohol evidence.

Joseph is a Certified Specialist in Criminal Defense through the State Bar of Arizona and a Certified Specialist in DUI Defense. His experience includes death penalty litigation, complex forensic evidence, appellate advocacy, and challenges involving blood testing procedures. He served as president of Arizona Attorneys for Criminal Justice and as a part-time Justice of the Peace. He has delivered more than 150 lectures and trainings for bar associations and defense organizations nationwide.

Joseph P. St. Louis has practiced in Arizona since 1987 and is admitted to the US District Court for Arizona and the Ninth Circuit. He has been recognized through an AV Preeminent rating from Martindale-Hubbell and inclusion in The Best Lawyers in America. His honors further include the Stephen Paul Barnard DUI Defense Lifetime Achievement Award. His practice remains focused on defending clients in high-stakes criminal and DUI cases.

Law Office Affiliations

• Partner, Joe St. Louis Law
• Member, State Bar of Arizona
• Member, National College for DUI Defense
• Member, Arizona Attorneys for Criminal Justice

Licensed State

• Arizona

Education

• University of Arizona College of Law
  Juris Doctor (JD)
• University of Arizona
  Bachelor of Arts

Awards & Badges