This study reveals the history of little-known film companies founded by Koreans in U.S. Occupied Japan (1945-1952). At a time when a powerful tide of decolonization and “ethnic renaissance” energized the cultural activities of newly liberated Koreans in both Japan and the Korean peninsula, the practical activities of Korean film companies in Occupied Japan were entangled in the economic, ideological, and cultural realities of the era. While these companies produced few original titles, they were nevertheless active in re-screening existing films in new contexts. A cross-media approach is vital for understanding the full scope of Korean engagement with film in postwar Japan. By studying the censorship records left by SCAP (Supreme Commander of Allied Powers), advertisements in Japanese and Korean print media, and documents kept by the Korean organizations, this paper offers insight into the ambitions, methods, and impacts of Korean film companies. It shows how Korean film producers negotiated vis-à-vis SCAP and Japanese film professionals to project their visions of a Korean national cinema in Japan.