Nationwide Investigations Group
- Oxford, UK, based examiners serving the UK and Europe.
- http://www.nigoxford.co.uk/polygraph.htm

Leonard Bierman & Associates
- Examiner with offices in Plantation and Miami Lakes, Florida.
- http://www.lbierman.com/

Shaffer and Associates Forensic Technologies
- Computerized polygraph investigation and screening with three Florida offices in Merritt Island, Ft. Pierce, and Orlando.
- http://www.shaffer-ft.com/

Australian Polygraph Services
- Polygraph examiners serving Australia and the Asia Pacific region.
- http://www.polygraph.com.au/

John M. Hurlock, LLC
- Private polygraph examiner near Kansas City, Missouri.
- http://www.kansascitypolygraph.com/

Cops, Inc.
- Hagerstown, Maryland, polygraph and investigation agency.
- http://www.copscorp.com/

J R Investigations
- Los Angeles, California, polygraph examination administered by Louis Rovner, Ph.D.
- http://www.cali-pi.com/polygraph.html

Neal Investigations and Polygraph
- Polygraph examiner and licensed private investigator based in California.
- http://nealpi.com/

Imbordino Polygraph Examinations, LLC
- Certified polygraph testing service based in Georgia, but examinations can be administered anywhere. Expert polygraph witness and former federal polygraph supervisor.
- http://www.imbordinopolygraph.com/

Michael D. Park & Associates Polygraph
- Dallas, Texas examiners performing assessments for domestic infidelity, employee theft, and attorney/client examinations.
- http://www.dallaspolygraph.com/

National Polygraph Consultants, LLC
- Polygraph quality control, training, program development, testing, and other services.
- http://www.nationalpolygraphconsultants.com/

Truth or Lie Polygraph Examination Agency
- Computerized polygraph agency in Southern California.
- http://www.truthorlie.com/

Wygant Polygraph
- James R. Wygant, retired polygraph examiner in Portland, Oregon who still teaches and does presentations.
- http://home.earthlink.net/~jrwygant/

Polygraph Investigative Services
- Singapore polygraph company providing polygraph testing services and training.
- http://www.polygraphis.com/

Distress Services UK
- Polygraph examiner in Leatherhead, Surrey, UK.
- http://polygraphs.co.uk/

Answers Private Detective Agency
- Austell, Georgia detective agency offering polygraph examinations.
- http://www.answers-pi.com/

Southwest Polygraph Service
- Fort Worth, Texas agency advertising polygraph examinations, instant drug tests, and psychological profile analysis.
- http://pages.sbcglobal.net/donmarsh/