- American Humanist Association (3)
- British Humanist Association
 - Council for Secular Humanism (CSH) (3)
- Great Lakes Humanist Society
- Created to foster a community of humanists dedicated to improving the human condition through rational inquiry and creative thinking.
- Humanist Association of Hong Kong
- International Humanist and Ethical Union (IHEU)
- Campaigns on humanist issues and develops practical humanist initiatives.
- New Acropolis - Nea Acropoli
- International nonprofit organisation that focuses on cultural activities and philosophy in the classical tradition, as well as Pythagoreanism, Neoplatonism, and theosophy. Also in Greek.
- San Diego Association of Secular Humanists (SANDASH)
- Stanford Humanists
- UBC Humanists' Society, The
- Association of Atheists, Agnostics, Skeptics, and Heathens offers information on members, meetings, volunteerism, and more.
- Washington Area Secular Humanists
- Nonprofit educational organisation concerned with free inquiry and critical thinking.
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