This book sheds light on the dollarization trends of four transitional economies in Southeast Asia: Cambodia, Lao PDR, Myanmar, and Vietnam. Moving beyond the tendency to focus on the Latin American experience of dollarization and prolonged high inflation, the chapters in this book compare how payment dollarization has been more persistent than other types of dollarization in this region due to network externalities. The book illustrates that dollarization started in the underdeveloped financial system in these countries and that dollarization interacted with financial development, which is in contrast to dollarization in Latin America. This project extends the frontiers of empirical studies on dollarization. It will be of interest to students, researchers and policy makers concerned with dollarization and economics in Southeast Asia.