Fire and Security
- 1002
- Association of British Investigators
- British based body for investigators. Also has Information articles and members directory.
- 1003
- Association of Christian Investigators
- A professional association for investigators designed to bring integrity to the industry and to provide a non-competitive environment for members to share information.
- 1004
- California Association of Licensed Investigators
- Licensed private investigators and private patrol operators in California.
- 1005
- Council of International Investigators
- International organization of private investigators and security consultants established in 1955 with membership in over 45 countries.
- 1006
- Institute of Professional Investigators
- An association dedicated to increasing the professionalism of investigators.
- 1007
- National Association of Fraud Investigators - NAFI
- Fraud investigation association with international memberships. Has a searchable directory of members.
- 1008
- National Society of Professional Insurance Investigators
- Membership, education, and recognition information.
- 1009
- Oklahoma Private Investigators Association - OPIA
- Licensed private investigators association in Oklahoma providing training seminars and legislation updates.
- 1010
- Society of Competitive Intelligence Professionals
- The premier online community for knowledge professionals all around the globe.
- 1011
- Society of Former Special Agents of the Federal Bureau of Investigation
- Publications and member information.
- 1012
- South Carolina Private Investigators Association
- A PI association that educates the private and legal investigator throughout the Southeast.
- 1013
- United Kingdom Professional Investigators Network
- A network of private investigators and detectives throughout the UK exchanging knowledge and business.
- 1014
- World Association of Professional Investigators
- The leading professional body promotes the investigative profession internationally and providing networking opportunities. It has industry news, a directory and other benefits.