Abstract
Chapter I.Preface Chapter II.Situation of Cartel Regulation by Criminal Sanction in the United States Chapter III.Deterrent Effect to Cartel by Criminal Sanction in Japan Chapter IV.Conclusion Recently, in Japan there have been some attempts made to strengthen the deterrence of violations of Antitrust law. The main attempts concern the application of criminal sanctions to cartel or other violations of Antitrust law. I wonder, however, not only whether criminal sanctions work effectively to deter violations of Antitrust law, but also wonder whether the application of criminal sanctions to cartel regulation is adequate. Therefore, this article will try to demonstrate the effect of criminal sanctions in Antitrust law. First of all, I will look at the situation of cartel regulation by criminal sanction in the United States. Then, reffering to that, I will discuss the effect of regulating cartels by criminal sanction in Japan, from the viewpoint of "fair notice" and "social moral reaction to cartels".