要旨：This paper examines the extent of localization in the Japanese manufacturing industries by utilizing a unique firm-level dataset on geographic locations. Following the point-pattern approach proposed by Duranton and Overman (2005, Review of Economic Studies), we find the following. First, about a half of the Japan's manufacturing sectors are classified as localized and the number of localized industries is the largest for the distance level of 40 km or less. Second, several industries within textile mills products branch are among the most localized, which resembles the results in the UK and suggests the existence of common factors across countries for concentration of industrial activities. Third, the distribution of distances between entrant (exiting) firms and remaining firms is, in most industries, insignificantly different from the case in which they are randomly located. This indicates that most of the industries become neither localized nor dispersed over time.