Compassion is a powerful feature of human experience and is a key component of individual, interpersonal, organizational and societal well-being. It is a fundamental skill that can be trained. Cultivating compassion may contribute to sustained well-being in individuals, groups, and organizations. There is now a growing scientific and clinical interest in understanding how compassion can be cultivated, and a need to examine what psychological processes are modulated by compassion training programs. The goal of this chapter is to briefly define the complex concept of compassion, describe the structure and content of the compassion cultivation training (CCT) program designed at Stanford University, and then share some of the empirical findings of research on CCT in community samples.