• Science: Science in Society: Skeptical Inquiry: Organizations  (19)
• Society: Religion and Spirituality: Humanism: Groups  (32)

• Atheist Alliance International - Organization of religion-free groups and individuals around the world. Aims to promote democratic, atheistic societies. Includes essays, information about conventions and publications, and a directory of freethought groups throughout the world.
• Church of Reality - Dedicated to understanding reality the way it really is.
• Ethical Atheist - Group resisting religion's influence while promoting a scientific and nonreligious worldview. Features articles and forums.
• Military Association of Atheists and Freethinkers - Grassroots organization that exists to provide a forum for United States service members to express their views and find a community of like-minded individuals. Articles, news, how to become a member, and frequently asked questions.

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