[en] Korea has taken steps to join the Nuclear Suppliers Group (NSG) which is a major part of the international nuclear export control regime. In this connection, it is an urgent task to build a new Korean nuclear export control system that includes NSG guidelines and control items. In addition, it is necessary to review the developed supplier countries' experience in the field of export control. The main purpose of this study is to analyze how the US and Japan have controlled the items listed in NSG part 1 and 2 guidelines. To this end, various relevant regulations of the US and Japan were studied. Among those regulations, the US Export Administration Regulation, US 10 CFR 110 and 810, and the Japan's Export Administration Order are included. Through the review process, this study identified NSG items which are controlled in the export control systems of the US and Japan. Furthermore, this study summarized and compared the export license criteria that must be satisfied before exporting each NSG item in the two countries. The export license criteria consist of permitted destinations, document requirements, and types of license. The results of this study are expected to contribute to establishing an appropriate Korean nuclear export control system and could be used as references to the practical export licensing policies of the US and Japan. 6 tabs., 13 refs., (Author) .new