The purpose of this study is to analyze research trends surrounding sustainable cities in Korea and to provide a direction for future research. For this purpose, the research method used was Topic Modeling, and research trends in sustainable cities were analyzed by surveying subjects of sustainable development research published in the Korean Journal Citation Index (KCI) between 1993 to November 2020. As a result of this analysis, research on sustainable cities was classified into five topics, and these five topics were linked to a single network. Of those, research related to urban resources and energy accounted for the majority of papers published. Furthermore, research related to urban growth management and governance studies has been active for many years. Also, we found that there was an overlap in citizen keywords in four topics, thus confirming the importance of citizen participation in a sustainable city. On the other hand, studies related to cultural heritage, atmosphere, waste, and green space were sparse. Based on these results, we have provided information about the current status of sustainable city research and propose research directions for future sustainable city studies.

[Key Words] Sustainable City, Urban Policy, Research Trend Analysis, Topic Modeling