Americans United for Separation of Church and State is a nonpartisan educational organization dedicated to preserving the constitutional principle of church-state separation as the only way to ensure religious freedom for all Americans.

Americans United, or AU, is a 501(c)(3) nonprofit educational organization based in Washington, D.C. Founded in 1947, Americans United works in the courts, in Congress and state legislatures, at the White House and in the arena of public opinion.

We address an array of pressing issues. We encourage you to learn about our projects, lawsuits and out-of-court successes. For a detailed account of AU activities in the past year, check our Annual Report. You may also want to read our Form 990. These documents are also available here.

AU is led by Executive Director Barry W. Lynn and governed by AU's Board of Trustees.

If you share our commitment to church-state separation, please join with us today. We welcome your support in this important cause.