Name (English / local (abbreviation)) |
Founded |
Region served |
Notes
|
Association against Quackery / Vereniging tegen de Kwakzalverij (VtdK) |
1881 |
Netherlands |
Oldest skeptical organisation.[1] Member of ECSO.[citation needed]
|
Association for Skeptical Enquiry (ASKE) |
1997 |
United Kingdom |
Member of ECSO.[2]
|
Australian Skeptics |
1980 |
Australia |
|
Center for Inquiry (CFI) |
1991 |
World |
Global umbrella organisation based in Amherst, New York.
|
Committee for the Advancement of Scientific Skepticism (CASS) |
2010 |
Canada |
Part of Centre for Inquiry Canada.
|
Committee for Skeptical Inquiry (CSI), formerly Committee for the Scientific Investigation of Claims of the Paranormal (CSICOP) |
1976 |
United States |
Part of the Center for Inquiry.
|
Committee Para / Comité Para[3] |
1949 |
Belgium |
Member of ECSO.[2] Serves Wallonia and Brussels.
|
Czech Skeptics Club Sisyfos / Český klub skeptiků Sisyfos (Sisyfos) |
1995 |
Czech Republic |
Member of ECSO.[2]
|
Dakshina Kannada Rationalist Association / தட்சிண கன்னட பகுத்தறிவாளர் ஒன்றியம் (DKRA) |
1976 |
India |
Member of FIRA.
|
The Free Thought / De Vrije Gedachte (DVG) |
1856 |
Netherlands |
Focuses on atheism/secular humanism.[4]
|
Edinburgh Skeptics Society (EdSkeptics) |
2009 |
United Kingdom |
|
European Council of Skeptical Organisations (ECSO) |
1994 |
Europe |
A European umbrella organization, based in Roßdorf, Germany.
|
Federation of Indian Rationalist Associations / இந்திய பகுத்தறிவாளர் ஒன்றியங்களின் பேரவை (FIRA) |
1997 |
India |
Indian umbrella organisation.
|
Freedom From Religion Foundation (FFRF) |
1978 |
United States |
Focuses on state/church separation, nontheism, and atheism.
|
French Association for Scientific Information / Association française pour l’information scientifique (AFIS) |
1968[5] |
France |
Member of ECSO.[2]
|
German Society for Fighting Quackery / Deutsche Gesellschaft zur Bekämpfung des Kurpfuschertums (DGBK) |
1903 |
Germany |
Dissolved in 1934.
|
Glasgow Skeptics |
2009 |
United Kingdom |
|
Good Thinking Society |
2012 |
United Kingdom |
|
Het Denkgelag |
2012 |
Belgium |
|
Hungarian Skeptic Society / Szkeptikus Társaság (HSS) |
2006 |
Hungary |
Member of ECSO.[2]
|
Independent Investigations Group (IIG) |
2000 |
United States |
|
Indian CSICOP |
19?? |
India |
Affiliated with CSI, member of FIRA.
|
Indian Rationalist Association (IRA) |
1949 |
India |
Member of Rationalist International.
|
Irish Skeptics Society |
2002 |
Ireland |
Member of ECSO.[2]
|
Italian Committee for the Investigation of Claims of the Pseudosciences / Comitato Italiano per il Controllo delle Affermazioni sulle Pseudoscienze (CICAP) |
1989 |
Italy |
Member of ECSO.[2]
|
James Randi Educational Foundation (JREF) |
1996 |
United States |
|
Launceston Skeptics |
2010 |
Australia |
|
Maharashtra Committee for Eradication of Blind Faith / Maharashtra Andhashraddha Nirmoolan Samiti (MANS) |
1989 |
India |
Member of FIRA.
|
Merseyside Skeptics Society (MSS) |
2009 |
United Kingdom |
|
MTÜ Eesti Skeptik (skeptik.ee) |
2007 |
Estonia |
|
New England Skeptical Society (NESS) |
1996 |
United States |
Fusion of three earlier organisations.
|
New Mexicans for Science and Reason (NMSR) |
1990 |
United States |
|
New Zealand Skeptics[6] (NZ Skeptics) |
1986 |
New Zealand |
|
Office for Science and Society (OSS) |
1999 |
Canada |
McGill University, Montreal.
|
Philippine Atheists and Agnostics Society (PATAS) |
2011 |
Philippines |
|
Polish Skeptics Club / Klub Sceptyków Polskich (KSP)[7][8] |
2010 |
Poland |
|
Portuguese Skeptical Community / Comunidade Céptica Portuguesa (COMCEPT) |
2012 |
Portugal |
|
Rational Alternative to Pseudoscience – Society for the Advancement of Critical Thinking / Alternativa Racional a las Pseudociencias – Sociedad para el Avance del Pensamiento Crítico (ARP-SAPC) |
1986 |
Spain |
Member of ECSO.[2]
|
Rationalist Union / Union Rationaliste |
1930 |
France |
|
Richard Dawkins Foundation for Reason and Science (RDFRS) |
2006 |
UK & US |
The American and British branches are independent.
|
Science and Popular Enlightenment / Föreningen Vetenskap och Folkbildning (VoF) |
1982 |
Sweden |
Member of ECSO.[2]
|
Science and Rationalists' Association of India / Bharatiya Bigyan O Yuktibadi Samiti |
1985 |
India |
Based in Kolkata, West Bengal.
|
SKEPP[9] |
1990 |
Belgium |
Member of ECSO.[2] Serves Flanders and Brussels.
|
Skepsis ry |
1987 |
Finland |
Member of ECSO.[2]
|
Skepsis Foundation / Stichting Skepsis (Skepsis) |
1987 |
Netherlands |
Member of ECSO.[2]
|
Skeptical Circle / Círculo Escéptico (CE) |
2006 |
Spain |
Member of ECSO.[2]
|
Skeptic Society / Общество скептиков[10] |
2013[11] |
Russia |
|
Skeptics in the Pub Online |
2020 |
United Kingdom / World |
|
Society for the Scientific Investigation of Parasciences / Gesellschaft zur wissenschaftlichen Untersuchung von Parawissenschaften (GWUP) |
1987 |
D-A-CH |
Based in Roßdorf, Germany. Member of ECSO.[2]
|
The Skeptics Society |
1992 |
United States |
Globally active, but mainly serves California.
|
Young Australian Skeptics (YAS) |
2008 |
Australia |
|
Young Skeptics |
2015 |
US |
American after school program.
|