The statistical treatment of international organizations in balance of payments methodology is examined. In particular, the paper reviews the current methodology and the practical application of the concept of what constitutes the residents of an economy with respect to international and regional organizations for national accounts and balance of payments statistics. Section I provides a compendium of the current methodology according to the United Nations' A System of National Accounts (SNA) and the IMF's Balance of Payments Manual (BPM). Section II presents a revised definition of the concept of international organizations. Section III covers a number of practical considerations in the application of this concept, and Section IV presents conclusions.