AT Austriche
- Protective Association against Unfair Competition (Schutzverband gegen unlauteren Wettbewerb): (en allemand) schutzverband.at / e-mail: office@schutzverband.at
AU Australie
- Australian Competition & Consumer Commission (ACCC): https://www.scamwatch.gov.au/content/index.phtml/tag/reportascam/
- Australian Securities & Investments Commission (ASIC): https://www.moneysmart.gov.au/scams
CA Canada
- Competition Bureau: http://www.competitionbureau.gc.ca/eic/site/cb-bc.nsf/eng/00157.html
(en français) http://www.bureaudelaconcurrence.gc.ca/eic/site/cb-bc.nsf/fra/00157.html
CH Suisse
- State Secretariat for Economic Affairs SECO: e-mail: fair-business@seco.admin.ch
- Federal Consumer Affairs Bureau: e-mail: konsum@gs-evd.admin.ch
CZ République tchèque
- Industrial Property Office: e-mail: fraud@upv.cz
DE Allemagne
- German Protective Association against Economic Crime (Deutscher Schutzverband gegen Wirtschaftskriminalität, DSW): (in German) https://www.dsw-schutzverband.de/kontakt
DK Danemark
- Consumer Ombudsman: https://www.consumerombudsman.dk/about-us/complaint-procedure/
FR France
- Directorate General for Competition Policy, Consumer Affairs and Fraud Control (DGCCRF, Direction générale de la concurrence, de la consommation et de la répression des fraudes): (en français) https://www.economie.gouv.fr/dgccrf/contacter-dgccrf
GB Royaume-Uni
- ActionFraud: http://www.actionfraud.police.uk/report_fraud
HU Hongrie 
- Hungarian Industrial Property Office (HIPO): e-mail: sztnh@hipo.gov.hu
IT Italie
- Italian Competition Authority: http://www.agcm.it/en/component/content/article/114-pagine-statiche/2305-how-to-report-a-complaint-in-english-about-an-unfair-commercial-practice.html?Itemid
NZ Nouvelle-Zélande
- Consumer Affairs: http://www.consumeraffairs.govt.nz/scams/report-a-scam
- Commerce Commission New Zealand: http://www.comcom.govt.nz/the-commission/making-a-complaint/online-complaint-form/
US États-Unis d’Amérique
- Federal Trade Commission (FTC): https://www.ftc.gov/faq/consumer-protection/submit-consumer-complaint-ftc et/ou https://www.ftccomplaintassistant.gov/#crnt&panel1-1
- Your State Attorney General: http://www.naag.org/naag/attorneys-general/whos-my-ag.php
- IC3: http://www.ic3.gov/
- Stop Fraud: http://www.stopfraud.gov/index.html
International
- International Consumer Protection and Enforcement Network (ICPEN)
References to national consumer authorities: https://www.icpen.org/resolve-dispute - Econsumer.gov portal: https://www.econsumer.gov/fr/FileAComplaint#crnt; Reference to national agencies: https://www.econsumer.gov/fr/MemberCountries#crnt