Religion, spirituality, and sport is an increasingly popular discipline in the sport psychology framework, often based on one’s own faith and religious beliefs. The spiritual dimension of the human experience first focused on religious and mystic experiences; later, various other states of mind, such as peak experiences, flow, and “being in the zone,” were discussed using the framework of humanistic and positive psychology, including in the context of sports. Human movement activities were part of religious cults and rites in ancient societies, for example in the Greek Olympic Games. Thanks to this tradition, the father of the modern Olympic Games, Pierre de Coubertin, wrote about religio athletae when discussing the transcendent aspects of modern sport. Contemporary sport is not connected to religion in such a direct way, however. The modern athlete normally follows his or her own religious tradition in a private manner. This does not mean, however, there is no connection between religion and sport. On the contrary, religious and quasi-religious behavior is commonly found in the sport environment, including superstitious rituals of athletes and fans, prayer in sporting areas, and application of non-Christian practices in sports psychology consulting. Furthermore, deeper values and meanings can be attributed to sport activities as a kind of nonreligious spirituality. It is possible to observe an increasing interest in the religious and spiritual aspects of sports in the new millennium, which can be seen in the establishing of specific professions like sport psychologists or chaplains, as well as university centers for the study of religion and spirituality in sport.