This article examines the 2011 reform of the Japanese Code of Civil Procedure (CCP), which introduced new provisions on international adjudicatory jurisdiction. After considering the salient features of major jurisdiction rules in the CCP, the author analyzes the regulation of international parallel litigations. The relevant rules of the Brussels I Regulation (Recast) are taken into consideration from a comparative perspective. In conclusion, the author points out that the basic structure of Japanese jurisdiction rules is in line with that of the Brussels I Regulation (Recast), whereas some important jurisdictional grounds clearly deviate from the latter.