Professor Falk is Albert G. Milbank Professor of International Law and Practice, Emeritus at Princeton University, and was Visiting Distinguished Professor in Global and International Studies at the University of California, Santa Barbara (2001–04). He retired from teaching in 2001.
He is a member of the Editorial Boards of The Nation and The Progressive, and Chair of the Board of the Nuclear Age Peace Foundation. He is a former advisory board member of the World Federalist Institute and the American Movement for World Government. He is Distinguished Visiting Professor in Global & International Studies, University of California at Santa Barbara . During 1999–2000, Falk worked on the Independent International Commission on Kosovo.