In this article, the role of cultural capital in strengthening social trust in Iran has been studied. Social trust is one of the most important components of social development. It is one of the important aspects of social relations. Cultural capital, which is an indicator of cultural development, is used objectively and the scientific and cultural qualities of a person can affect social trust. The research approach in this study is descriptive-causal and has been conducted in a cross-sectional and temporal manner. The statistical population includes women and men over 18 years of age in Zanjan. Findings showed that there is a relatively high correlation between cultural capital and social trust and this correlation is statistically significant. Household income showed a negative relationship with social trust, so that by increasing the income level of families, their level of social trust was reduced. But there was a positive and direct correlation between the education of citizens and their parents' education and social trust, as the level of education and also literacy of individuals increased social trust. Similarly, the results of regression analysis showed that the variables of cultural capital, income and education of the individual and responsible parents were 64 percent of the total dependent variable variation, but the share of the main variable of the research, namely, cultural capital, in this explanation was 33 percent. پرونده مقاله