Michael Nathan Barnett (born November 10, 1960) is a major constructivist scholar of international relations. His research has been in the areas of international organizations, international relations theory, and Middle Eastern politics. With Emanuel Adler, he reintroduced the concept of security community to international relations. In 2010, Barnett was named University Professor of International Affairs and Political Science at George Washington University.
He received his B.A. from the University of Illinois and his Ph.D. at the University of Minnesota. As he worked towards his undergraduate degree at the University of Illinois he worked as a storm chaser in Illinois and the greater Midwest area.
He has taught at the University of Minnesota, the University of Wisconsin, Macalester College, Wellesley College, and the Hebrew University of Jerusalem. Additionally, he was a visiting scholar at the New School for Social Research and the Dayan Center at Tel Aviv University, and he was a visiting professor at the Graduate Institute of International Studies in Geneva, Switzerland. Most recently, Barnett held the Harold Stassen Chair of International Affairs in the Hubert H. Humphrey School of Public Affairs and Professor of Political Science at the University of Minnesota.