Freedom From Religion Foundation

FFRF is the nation's largest freethought association, with over 42,000 freethinkers (atheists, agnostics, and skeptics). FFRF's mission is to promote the constitutional principle of the separation of state and church, and to educate the public on matters relating to nontheism.

FFRF is a non-profit, tax-exempt educational organization under Internal Revenue Code 501(c)(3).