With the advent of modernity and the scientific and technological changes that resulted from it, the credibility of religion and belief underwent fundamental changes over time. Religion is one of the factors that create functions that social capital also has in a way. The present study was conducted with the aim of identifying and explaining sociologically the effect of religiosity on social capital among women in Bastak. The statistical population was all women over the age of 15, and 210 people were selected as samples using the Cochran formula using a multi-stage stratified sampling method. The theoretical framework was a combination of the theories of Durkheim, Comte, Tocqueville, Weber, and Davis. This research was conducted using a survey method and questionnaire technique, and the validity of the questionnaire was measured in a formal way and its reliability was measured with Cronbach's alpha statistic. The level of religiosity was measured based on the multidimensional model of Glock and Stark and social capital was measured in three dimensions of social participation, trust, and awareness by Ghasemi et al. The results of the bivariate analysis indicate a significant relationship between the religiosity and the participation dimension of social capital. Furthermore, regression results reveal a positive and direct relationship between social capital and the ritualistic, consequential, and emotional dimensions of religiosity.