American Polygraph Association (APA)
- Professional organization for polygraph specialists. Site includes code of ethics, standards of practice, and information about training and polygraph issues.
- http://www.polygraph.org/

American Association of Police Polygraphists (AAPP)
- Organization of polygraph examiners in USA law enforcement organizations. Site includes standards of practice and seminar information.
- http://www.wordnet.net/aapp/

Polygraph Association of South Africa (PASA)
- Organization to co-ordinate and consolidate the activities of the polygraph profession and the polygraph industry in South Africa. Research, history, list of training schools, member lists, used equipment and employment listings, and constitution.
- http://www.pasa.co.za/