The American Humanist Association is a national organization founded in 1941 to promote humanism in the United States. The AHA represents both secular and religious naturalistic humanism, and cooperates with other national and international humanist organizations to advance the ideals of humanism. The AHA organizes and supports local humanist chapters in many major American cities, is a full member of the International Humanist and Ethical Union, and provides support for other humanist organizations, including the Humanist Institute, the Humanist Society of Friends, the Friends of Religious Humanism, the AHA Feminist Caucus, and the Humanist Chapter Assembly. The AHA has an active outreach program that provides humanist celebrants, chaplains, advocates, speakers, and advisors to help individuals and organizations that need non-sectarian assistance from a naturalistic philosophical viewpoint.

The Council for Secular Humanism cultivates rational inquiry, ethical values, and human development through the advancement of secular humanism. To carry out its mission the Council for Secular Humanism sponsors publications, programs, and organizes meetings and other group activities. The Council's specific objectives are:

• To promote secular humanist principles to the public, media, and policy-makers
• To provide secular humanist activities and communities to serve the needs of nonreligious people and foster human enrichment
• To demonstrate the viability of the secular humanist eupraxophy as an alternative naturalistic life-stance
• To engage in research relating to the critical examination of religious and supernatural claims and the humanist outlook
• To conduct educational programs for all age levels.