In 2011, Japan celebrated the 50th anniversary of its own achievement of universal health coverage (UHC). On this occasion, the government of Japan and the World Bank conceived the idea of undertaking a multi-country study to respond to this growing demand by sharing rich and varied country experiences from countries at different stages of adopting and implementing UHC strategies, including Japan itself. This led to the formation of a joint Japan-World Bank research team under the Japan-World Bank partnership program for UHC. The program was set up as a two-year multi-country study to help fill the gap in knowledge about the policy decisions and implementation processes that countries undertake when they adopt UHC goals. This report brings together 10 in-depth studies on different aspects of Japan's UHC experience, using a common framework for analysis focused on the political economy of UHC reform, and the policies and strategies for addressing challenges in health financing and human resources for health. Japan's commitment to UHC played a key role in the country's economic recovery after World War second, and helped ensure that the benefits of economic growth were shared equitably across the population.