Corporate governance is a process in motion, and the practice of corporate governance has developed radically in the last few years. All countries around the world are now aiming to issue new codes for corporate governance. These codes have generally been drawn up in reaction to events or crises and respond directly to the economic, social, political and public concerns. This book provides a comprehensive study of the relationship between corporate governance mechanisms and asymmetric information. We claim that an important diagnostic of an effective corporate governance mechanism is one that reduces asymmetric information. In other words if corporate governance mechanisms are resolving agency conflicts they are likely reducing asymmetric information as well. From this point of view we are able to establish a practical guidance of corporate governance mechanisms that can be used by corporations to mitigate asymmetric information. the results indicated that the higher the quality of corporate governance the lower the degree of asymmetric information.