This guide aims to provide a brief introduction of the Korean legal system and some of the most useful resources of web-based databases for research on Korean law. The Republic of Korea (South Korea) is one of the countries with the highest penetration of high-speed internet access, and those who search for legal information can easily attain enormous resources for Korean law through the internet. However, most of the web-based resources are provided in Korean. Thus, this article tries to enlist as many websites in English or with English translation as possible for foreign users. For those who have a good command of Korean, some useful websites in Korean will also be listed.