The purpose of this article is to review select important studies (both books and articles) on ethics of mass media (or of journalists) published in the last decade in Japan. The themes of these studies can be categorized into three, which pertain to independent regulatory commission (e.g.press council), professional education for journalists (or for future journalists), and rules on routine newsgathering and editing. The most recent studies have focused more on social system of media ethics than on norms and behaviors of journalists.