- Association of Independent Danish Skeptics
 - Australian Skeptics
- Investigates the paranormal and pseudo-science from a responsible scientific viewpoint.
- Bay Area Skeptics
- Encourage critical thinking, and accuracy in the media and schools. Focusing on paranormal, pseudoscience, fraud, and psychotherapeutic practices.
- British Columbia Skeptics
- Cincinnati Skeptics
- Committed to encouraging rational, well-informed evaluation of fringe-science, pseudo-science and paranormal claims.
- Committee for the Scientific Investigation of Claims of the Paranormal (CSICOP) (5)
- East Bay Skeptics Society
- Advocative philosophical and social organisation promoting skeptical inquiry of paranormal claims and of any manner of thinking or movement that claims a scientific basis.
- Indonesian Skeptics Society
- Presents information and articles for independent researchers, UFO enthusiasts, paranormals, and scientists.
- National Capital Area Skeptics
- An independent nonprofit educational and scientific organisation that promotes critical thinking and scientific understanding.
- New England Skeptical Society, The
- Dedicated to the promotion of science, reason, and critical thinking skills.
- New Zealand Skeptics
- Membership information and news.
- Ontario Skeptics Society for Critical Inquiry
- Explanation of objectives, articles, and frequently asked questions.
- Rationalists of East Tennessee
- Dedicated to skeptical issues, using a rationalist approach to the discussion of scientific, philosophical, and society issues.
- Rocky Mountain Skeptics
- Nonprofit educational and investigative organisation founded in 1983 to promote critical thinking.
- Russian Skeptics Club
- Collection of articles designed to encourage skepticism. In Russian.
- Secular Student Alliance
- Educates students about the value of science and secularism in society.
- Skepsis - Finish Association of Skeptics
- Outlines aims and activities.
- Skeptic Friends Network
- Skeptics Society (1)
- Stichting Skepsis - Dutch Foundation of Skeptics
- Listing articles and information on activities.
- Tampa Bay Skeptics
- Nonprofit scientific and educational organisation that critically examines paranormal and fringe-science claims and publishes a quarterly newsletter.
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