Below is a select list of non-profit organizations promoting religious freedom and the separation of church and state. Descriptions are from the websites. This list is for reference—IARFUS does not endorse these organizations.

American Civil Liberties Union aclu.org “The ACLU strives to safeguard the First Amendment’s guarantee of religious liberty by ensuring that laws and governmental practices neither promote religion nor interfere with its free exercise.”

Americans United for Separation of Church and State au.org “Americans United is a religious freedom advocacy organization based in Washington, D.C. Founded in 1947, AU educates Americans about the importance of church-state separation in safeguarding religious freedom.”

Christians Against Christian Nationalism christiansagainstchristiannationalism.org “Christians Against Christian Nationalism is a grassroots campaign to combat Christian nationalism in local, state and national contexts. Launched in 2019, this effort is not in response to any one event or statement; rather, it’s a sustained campaign built to resist Christian nationalism and the threat it poses to our faith and country.

Freedom Forum freedomforum.org “Freedom Forum [founded in 1991] is one of the nation's leading voices on the First Amendment and the five freedoms it protects. We strive to ensure that a diversity of voices and viewpoints are represented in our work. Each year, we reach millions of Americans.”

Freedom from Religion Foundation ffrf.org “Incorporated in 1978 in Wisconsin, FFRF is the nation’s largest freethought association with nearly 42,000 freethinkers: atheists, agnostics and skeptics of any pedigree.”

Secular Coalition for America Secular.org “The Secular Coalition for America advocates for religious freedom, as guaranteed by the First Amendment of the U.S. Constitution, and works to defend the equal rights of nonreligious Americans. Representing 20 secular organizations.

Texas Freedom Network tfn.org “TFN builds political power to create a more just and equitable Texas free from far-right extremism.”

United States Commission on International Religious Freedom uscirf.gov/ “Our mission is to advance international freedom of religion or belief, by independently assessing and unflinchingly confronting threats to this fundamental right.”