International Organization is a peer-reviewed academic journal that covers the entire field of international affairs. Subject areas include: foreign policies, international relations, international and comparative political economy, security policies, environmental disputes and resolutions, European integration, alliance patterns and war, bargaining and conflict resolution, economic development and adjustment, and international capital movements.
It is published by the Cambridge University Press on behalf of the International Organization Foundation.
Its current editor is Jon Pevehouse, Professor of Political Science at the University of Wisconsin-Madison.
In a 2005 survey, 1,084 international relations scholars were asked "which journals publish articles that have the greatest impact on the way international relations scholars think about their subject and their work" and to make a nominal list of their top four. Of the 749 scholars who replied, 521 (≈70%) listed IO with International Studies Quarterly coming in second with 371 (≈50%) responses.