This book presents a comprehensive analysis of tax consequences in an oligopolistic market. It provides the reader with a systematic and precise way of understanding the research content of tax incidence. A major feature of the book is its analysis of tax incidence from both domestic and international oligopolies. Then, by examining various oligopoly models, it approaches the essence of domestic and multilateral tax issues. Starting with the general theory of commodity tax incidence in an oligopoly, the topics addressed in this book include tax reform, environmental regulation, and policy coordination in international oligopolies. In addition to the usual oligopoly model, managerial oligopoly, the public pricing problem for firms in an oligopoly, and mixed oligopoly are dealt with. By presenting individual issues and explaining the relevance of each topic, this book is highly recommended for readers interested in policymaking and the global market in relation to the interdisciplinary developments of public economics, regional economics, and international economics. This book is also valuable as an advanced textbook on applied economics.