In response to changes in internal needs, external organizational environments, and the expectations of shareholders, innovation is now an important common-place aspect of governance and the running of public service organizations. This book contributes towards the discussion of PSO innovation through theoretically informed empirical studies of innovation across a range of theories, topics and fields. The studies - which examine the situation in a range of countries in Europe and Asia - cover a range of different organizations such as non-profits, health service organizations, and local governments. This book was originally published as a special issue of Public Management Review.