Alliance Defending Freedom

The Alliance Defending Freedom (ADF), formerly the Alliance Defense Fund, is an American 501(c)(3) nonprofit conservative Christian legal advocacy group. It works to expand Christian religious practices within public schools and in government. ADF is headquartered in Scottsdale, Arizona, with branch offices in several locations including Washington, D.C., and New York. Its international subsidiary, Alliance Defending Freedom International, with headquarters in Vienna, Austria, operates in over 100 countries.