This chapter provides an introduction to the topic of governance in the realm of projects. It starts with a broad perspective of governance at global, regional, and sector levels, and then narrows down to project, program, portfolio, and intra- and inter-organizational levels. The historic roots of governance in the academic project management literature are discussed as well as the implications stemming from attempts in defining governance. While the difficulties of coming up with a general-purpose definition of governance are outlined, an economic definition of governance is provided as a starting point for the chapters to come. This is followed by a positioning of governance against the allied concepts of management, leadership, and governmentality. The chapter ends with an overview of the six parts of the book and their constitutive chapters.