This study intends to analyze the utility of library catalogs from library users’ point of view. Emphasis was on verifying how useful library catalogs are as a tool in order to satisfy the information need of library users. To the end, this study developed the criteria and indicators that can be used to measure the utility of library catalogs from users’ viewpoint. On the basis of it, the utility of library catalogs was measured systematically. Sample catalog records for the utility verification were selected from 6 most representative university libraries in Korea. The result of verification was presented and described with the typical examples, and the key factors that caused the low utility of library catalogs were also identified and discussed.