International Association of Asian Crime Investigators (I.A.A.C.I.)
http://www.iaaci.com

Interpol
http://www.interpol.com

Borderpol-International Border Police Organization
http://www.borderpol.org

Cepol
http://www.cepol.org

Europol-European Law Enforcement Organization
http://www.europol.eu.int

The Society for the Policing of Cyberspace (P.O.L.C.Y.B.)
http://www.polcyb.org