The purpose of this study is to examine changes related to migration in the religiosity of individuals and what lies behind such changes. The study is foremost based on interviews with 23 Swedish-Chileans who have lived in Sweden for an extended period of time and who were adults when they immigrated to Sweden. The interviews are thematic life stories. Each one of the individuals narrates his or her life-story and each narration focuses upon a theme: one’s own religiosity. The study also includes data collected by sending a letter to a larger, random selection of Swedish-Chileans. This letter contained relevant question on religiosity. The changes in the religiosity of these Swedish-Chileans is studied based upon a working-hypothesis that religiosity is something that is created, maintained, and changed by way of the individual being part of a social context. The analysis of the findings is accomplished primarily through an application of Peter Berger’s and Thomas Luckmann’s conceptions of socialization and plausibility structures. The study also discusses the conception of religiosity and, given this topic, which groups or individuals may be studied. Both the findings from the inquiry and the interviews show that religious changes are common among Swedish-Chileans. The changes however move in different directions, are of different intensity, and touch on different aspects of the religiosity of the individuals. The findings from the interviews point at that the changes in the life situation that have occurred as a result of the physical transfer from one country to another, i.e., a situational change, as well as changes that are related to the passage of time, i.e., a process change. The underlying causes of the changes in religiosity are also that the social structures that were significant for the religiosity, i.e., the socio-religious structures of the interviewees, are not the same in Sweden as they were in Chile.