Antitrust Division, USDOJ: http://www.justice.gov/atr/
Federal Trade Commission: http://www.ftc.gov
National Association of Attorneys General: http://www.naag.org
Canada: http://www.competitionbureau.gc.ca/eic/site/cb-bc.nsf/Intro?Open
Brazil: http://www.cade.gov.br (Council for Economic Defense (CADE)
China: http://fldj.mofcom.gov.cn/?1447642113=1979857133 (MOFCOM)
European Union: http://ec.europa.eu/dgs/competition/index_en.htm (DG Comp)
India: http://www.cci.gov.in (Competition Commission of India)
ICN: http://www.internationalcompetitionnetwork.org
Japan:http://www.jftc.go.jp/en/ (Japan Fair Trade Commission)
Mexico: http://www.cfc.gob.mx/cofece/ (federal competition commission)
South Africa: http://www.compcom.co.za (Competition Commission)
United Kingdom: http://www.oft.gov.uk (Office of Fair Trading)
Vietnam: http://www.vca.gov.vn (Vietnam Competition Authority)