This is a list of notable organizations that promote or practice scientific skepticism.
| Name (English / local (abbreviation)) | Founded | Region served | Notes | |||||
|---|---|---|---|---|---|---|---|---|
| Association against Quackery / Vereniging tegen de Kwakzalverij (VtdK) | 1881 | Oldest skeptical organisation.[1] Member of ECSO. | ||||||
| Association for Skeptical Enquiry (ASKE) | 1997 | Member of ECSO.[2] | ||||||
| 1980 | ||||||||
| Center for Inquiry (CFI) | 1991 | Global umbrella organisation based in Amherst, New York. | ||||||
| Committee for the Advancement of Scientific Skepticism (CASS) | 2010 | Part of Centre for Inquiry Canada. | ||||||
| Committee for Skeptical Inquiry (CSI), formerly Committee for the Scientific Investigation of Claims of the Paranormal (CSICOP) | 1976 | Part of the Center for Inquiry. | ||||||
| Committee Para / Comité Para[3] | 1949 | Member of ECSO. Serves Wallonia and Brussels. | ||||||
| Czech Skeptics Club Sisyfos / Český klub skeptiků Sisyfos (Sisyfos) | 1995 | Member of ECSO. | ||||||
| Dakshina Kannada Rationalist Association / தட்சிண கன்னட பகுத்தறிவாளர் ஒன்றியம் (DKRA) | 1976 | Member of FIRA. | ||||||
| The Free Thought / De Vrije Gedachte (DVG) | 1856 | Focuses on atheism/secular humanism.[4] | ||||||
| Edinburgh Skeptics Society (EdSkeptics) | 2009 | |||||||
| European Council of Skeptical Organisations (ECSO) | 1994 | A European umbrella organization, based in Roßdorf, Germany. | ||||||
| Federation of Indian Rationalist Associations / இந்திய பகுத்தறிவாளர் ஒன்றியங்களின் பேரவை (FIRA) | 1997 | Indian umbrella organisation. | ||||||
| Freedom From Religion Foundation (FFRF) | 1978 | Focuses on state/church separation, nontheism, and atheism. | ||||||
| French Association for Scientific Information / Association française pour l’information scientifique (AFIS) | 1968[5] | Member of ECSO. | ||||||
| German Society for Fighting Quackery / Deutsche Gesellschaft zur Bekämpfung des Kurpfuschertums (DGBK) | 1903 | Dissolved in 1934. | ||||||
| 2009 | ||||||||
| 2012 | ||||||||
| 2012 | ||||||||
| Hungarian Skeptic Society / Szkeptikus Társaság (HSS) | 2006 | Member of ECSO. | ||||||
| Independent Investigations Group (IIG) | 2000 | |||||||
| 19?? | Affiliated with CSI, member of FIRA. | |||||||
| Indian Rationalist Association (IRA) | 1949 | Member of Rationalist International. | ||||||
| 2002 | Member of ECSO. | |||||||
| Italian Committee for the Investigation of Claims of the Pseudosciences / Comitato Italiano per il Controllo delle Affermazioni sulle Pseudoscienze (CICAP) | 1989 | Member of ECSO. | ||||||
| James Randi Educational Foundation (JREF) | 1996 | |||||||
| 2010 | ||||||||
| Maharashtra Committee for Eradication of Blind Faith / Maharashtra Andhashraddha Nirmoolan Samiti (MANS) | 1989 | Member of FIRA. | ||||||
| Merseyside Skeptics Society (MSS) | 2009 | |||||||
| MTÜ Eesti Skeptik (skeptik.ee) | 2007 | |||||||
| New England Skeptical Society (NESS) | 1996 | Fusion of three earlier organisations. | ||||||
| New Mexicans for Science and Reason (NMSR) | 1990 | |||||||
| New Zealand Skeptics[6] (NZ Skeptics) | 1986 | |||||||
| Office for Science and Society (OSS) | 1999 | McGill University, Montreal. | ||||||
| Philippine Atheists and Agnostics Society (PATAS) | 2011 | |||||||
| Polish Skeptics Club / Klub Sceptyków Polskich (KSP)[7] [8] | 2010 | |||||||
| Portuguese Skeptical Community / Comunidade Céptica Portuguesa (COMCEPT) | 2012 | |||||||
| 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 | Member of ECSO. | ||||||
| Rationalist Union / Union Rationaliste | 1930 | |||||||
| Richard Dawkins Foundation for Reason and Science (RDFRS) | 2006 | The American and British branches are independent. | - | Romanian Rationalist Society / Societatea Raționalistă Română (SocRat) | 2013 | Member of ECSO.[9] --> | ||
| Science and Popular Enlightenment / Föreningen Vetenskap och Folkbildning (VoF) | 1982 | Member of ECSO. | ||||||
| Science and Rationalists' Association of India / Bharatiya Bigyan O Yuktibadi Samiti | 1985 | Based in Kolkata, West Bengal. | ||||||
| SKEPP[10] | 1990 | Member of ECSO. Serves Flanders and Brussels. | ||||||
| 1987 | Member of ECSO. | |||||||
| Skepsis Foundation / Stichting Skepsis (Skepsis) | 1987 | Member of ECSO. | ||||||
| Skeptical Circle / Círculo Escéptico (CE) | 2006 | Member of ECSO. | ||||||
| Skeptic Society / Общество скептиков[11] | 2013[12] | |||||||
| 2020 | ||||||||
| Society for the Scientific Investigation of Parasciences / Gesellschaft zur wissenschaftlichen Untersuchung von Parawissenschaften (GWUP) | 1987 | Based in Roßdorf, Germany. Member of ECSO. | ||||||
| 1992 | Globally active, but mainly serves California. | |||||||
| Young Australian Skeptics (YAS) | 2008 | |||||||
| 2015 | American after school program. | |||||||