John S. Swartz

With international credentials and worldwide experience, John S. Swartz, is the Texas based examiner who has served the courts, law firms, corporations, hearing officials, multiple client companies  and countless other decision makers worldwide for over thirty years.

From sex offenders to Capital Murder, he is a former examiner at the United States Department of Justice, and he frequently serves as the authoritative expert witness in state and Federal courts. He is the first choice of Texas Criminal Court Judges.

John S. Swartz is a former Federal examiner and Intelligence Supervisor for the United States Department of Justice. Since 1986, he has conducted thousands of examinations worldwide on a wide range of issues. Well known as an expert witness on polygraph, Mr. Swartz serves clients worldwide from his Houston, Texas office including corporations, law firms, state and Federal courts, law enforcement and other government agencies. Mr. Swartz has recently been featured as the polygraph consultant to NBC News/Dateline, CBS Paramount Productions, to ABC NEWS in Houston on major criminal issues and to the PBS documentary series, FRONTLINE.

Polygraph Examiner

POLYGRAPH examiner

Professional Credentials


  • American Polygraph Association

  • American Association of Police Polygraphists

Education & Training Background

  • Sturm School of Polygraph

  • U.S. Department of Defense Polygraph Institute

  • Trained in Advanced Forensic Psychophysiology

  • Trained in Polygraph Examinations of Sex Offenders

Professional Experience

  • Former United States Department of Justice Federal Examiner

  • Former DEA Intelligence Operations Director

  • Trained in Polygraph Examinations of Sex Offenders.

  • 2015

    Senior Polygraph Examiner
    U.S. Department of State

  • 2012

    Retired Polygraph Examiner
    U.S. Department of Justice

  • 2012

    Retired Polygraph Examiner
    Drug Enforcement Administration

  • 2010

    Advisor and Consultant
    Office of the Chief and Command
    Legal Staff Houston Police Department

  • 2008

    Examiner and Consultant
    NBC News/Dateline

  • 2007

    Member Post Convictions Sex Offender Committee
    American Polygraph Association