ASIL is a nonprofit, nonpartisan, educational membership organization founded in 1906 and chartered by Congress in 1950. ASIL holds Category II Consultative Status to the Economic and Social Council of the United Nations and is a constituent society of the American Council of Learned Societies. The Society is headquartered at Tillar House in Washington, D.C.

ASIL was established in 1906. While our educational mission remains as central today as it was then, our programs have adapted to dramatic changes in international law, as both an expansive topic and an evolving professional discipline. The Society celebrated its Centennial in 2006 under the theme, "A Just World Under Law."