The phenomenon of religiosity is increasingly often explored by representatives of various scientific disciplines. This is particularly noticeable in the field of the psychology of religion. The issues of human religiosity have been attracting an increasing amount of interest among Polish scholars. The present article presents the main trends illustrating the development of interest in the phenomenon of religiosity in the field of psychology. Both Polish and international contexts are considered. Additionally, the papers included in the special issue of Roczniki Psychologiczne (Annals of Psychology) are outlined. The special issue is devoted to the problems addressed by Polish psychologists interested in the phenomenon of human religiosity.Keywords: psychology of religion; religiosity; interest in religiosity; psychology of religion in Poland.Religion is an important area of life for many people -it is an important element of culture as well as provides meanings and structures to human behaviors and experiences. Survey results confirm this consistently. Both in the United States and in Europe, the number of people declaring themselves as believers exceeds 70% (The Gallup Poll, 2015). Despite the undoubtedly common presence of various manifestations of religiosity in the public sphere and in the course of human life, psychology has, for many years, devoted little attention to