In the present chapter, we begin with a brief introduction to the rise of modern positive psychology. We then trace the foundations of positive psychology to two central themes represented in existential scholarship, namely, a focus on the power of being human and the importance of being happy with others. Next, we tackle the question of whether or not positive psychology has truly become an international movement by examining the publication trends of the top three journals covering positive psychological research from 2000 to 2018. As our findings show, much of the research on positive psychology remains dominated by research produced in Western, Educated, Industrialized, Rich, and Democratic (WEIRD) countries, especially the USA, that are conducted by WEIRD researchers. We then move on to highlighting some of the major themes represented in each of the chapters of this volume, underscoring our hope to celebrate the works of many local researchers who have helped to develop and sustain the global representation of a science of positive human existence around the world.