List of scientific skepticism organizations

Name	Founded	Region served	Notes
Association against Quackery / Vereniging tegen de Kwakzalverij	1881		Oldest skeptical organisation. Member of ECSO.
Association for Skeptical Enquiry	1997		Member of ECSO.
Australian Skeptics	1980
Center for Inquiry	1991	World	Global umbrella organisation based in Amherst, New York.
Committee for the Advancement of Scientific Skepticism	2010		Part of Centre for Inquiry Canada.
Committee for Skeptical Inquiry, formerly Committee for the Scientific Investigation of Claims of the Paranormal	1976		Part of the Center for Inquiry.
Committee Para / Comité Para	1949		Member of ECSO. Serves Wallonia and Brussels.
Czech Skeptics Club Sisyfos / Český klub skeptiků Sisyfos	1995		Member of ECSO.
Dakshina Kannada Rationalist Association / தட்சிண கன்னட பகுத்தறிவாளர் ஒன்றியம்	1976		Member of FIRA.
The Free Thought / De Vrije Gedachte	1856		Focuses on atheism/secular humanism.
Edinburgh Skeptics Society	2009
European Council of Skeptical Organisations	1994		A European umbrella organization, based in Roßdorf, Germany.
Federation of Indian Rationalist Associations / இந்திய பகுத்தறிவாளர் ஒன்றியங்களின் பேரவை	1997		Indian umbrella organisation.
Freedom From Religion Foundation	1978		Focuses on state/church separation, nontheism, and atheism.
French Association for Scientific Information / Association française pour l'information scientifique	1968		Member of ECSO.
Deutsche Gesellschaft [zur Bekämpfung des Kurpfuschertums|German Society for Fighting Quackery] / Deutsche Gesellschaft zur Bekämpfung des Kurpfuschertums	1903		Dissolved in 1934.
Glasgow Skeptics	2009
Good Thinking Society	2012
Het Denkgelag	2012
Hungarian Skeptic Society / Szkeptikus Társaság	2006		Member of ECSO.
Independent Investigations Group	2000
Indian CSICOP	19??		Affiliated with CSI, member of FIRA.
Indian Rationalist Association	1949		Member of Rationalist International.
Irish Skeptics Society	2002		Member of ECSO.
Italian Committee for the Investigation of Claims of the Pseudosciences / Comitato Italiano per il Controllo delle Affermazioni sulle Pseudoscienze	1989		Member of ECSO.
James Randi Educational Foundation	1996
Launceston Skeptics	2010
Maharashtra Committee for Eradication of Blind Faith / Maharashtra Andhashraddha Nirmoolan Samiti	1989		Member of FIRA.
Merseyside Skeptics Society	2009
MTÜ Eesti Skeptik	2007
New England Skeptical Society	1996		Fusion of three earlier organisations.
New Mexicans for Science and Reason	1990
New Zealand Skeptics	1986
Office for Science and Society	1999		McGill University, Montreal.
Philippine Atheists and Agnostics Society	2011
Polish Skeptics Club / Klub Sceptyków Polskich	2010
Portuguese Skeptical Community / Comunidade Céptica Portuguesa	2012
Rational Alternative to Pseudoscience – Society for the Advancement of Critical Thinking / Alternativa Racional a las Pseudociencias – Sociedad para el Avance del Pensamiento Crítico	1986		Member of ECSO.
Rationalist Union / Union Rationaliste	1930
Richard Dawkins Foundation for Reason and Science	2006	UK