Texas Police & Penal Expert Witnesses

Expert witnesses who are available to consult and testify regarding police and penal issues may be found here. These consultants may advise concerning police procedures, police traffic radar, and polygraph & lie detector testing. Experts found on this page may provide reports involving crime scene analysis, criminology, and the use of deadly & excessive force. They can also testify regarding jails, prisons, and law enforcement, as well as related topics.

Expert Witnesses

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Featured Experts
Ron Martinelli (Martinelli & Associates: Justice & Forensic Consultants, Inc.)
Referred to by respected and experienced law enforcement and security civil and criminal attorneys as “The expert’s expert.” Representing agency defense and concerned plaintiff and criminal defense attorneys since 1991. On the prevailing side in over... Learn More ›

Robert Grant, III, Esq (Integrated Operational Policing, Incorporation)
iOPolicing remains the premier resource for expert testimony, case studies and evaluation, agency support, and advancing the area of Police Sciences. The founder of Integrated Operational Police, LLC., (iOPolicing) Robert Grant, III, Esquire, and he... Learn More ›

Scott A. DeFoe (On-Scene Consulting Group, LLC)
Retired Sergeant II+1 Los Angeles Police Department Special Weapons and Tactics(SWAT). Worked numerous assignments over the past 29 years to include: SWAT, K9, Vice, Narcotics, Jail Operations, Internal Affairs, Gangs, Crisis Negotiation Team and Patrol.... Learn More ›

Stan Kephart (Kephart Consulting, LLC)
Unrivaled qualifications in Police and Security Best Practices. Olympic Games Security Administrator, Retired Police Chief, Probation Chief, & Concert Public Safety Director. Qualified in Large Public Venue Policing & Security, Preempting School Shootings,... Learn More ›

Park Dietz (Park Dietz & Associates, Inc.)
PD&A offers forensic experts in psychiatry, psychology, neuropsychology, neurology, pathology, nursing, social work, criminal behavior analysis, police, corrections, security, and toxicology. For the 25 years we've been operating as a group we've consistently... Learn More ›


Please click on one of the links to find consultants in that area of expertise.