Extraterritorial application of domestic competition law is an important feature of the current regulatory framework governing anticompetitive conduct. Japan was initially hesitant to apply its Antimonopoly Act in such a manner. However, over the last two decades there has been a significant shift in its approach. Japan has gradually embraced extraterritoriality and the Japan Fair Trade Commission has actively enforced competition law in a purely offshore context. This article investigates this evolution and considered the most recent and controversial cases in which Japan has applied its laws in a distinctive fashion.