Social capital is a basic concept in contemporary sociology to explain different social spheres along with the increasing complexity and changes in the levels of social life. In the present study, dimensions of family social capital were examined based on different types of family relationships. The purpose was to evaluate the effectiveness of the mechanisms of family social capital on social deviances by secondary analysis of national social surveys about Iranian values, attitudes and behaviors and general data about deviances and risky behaviors in Iran that had been collected in 2010 and 2011. The results indicated significant relationship between family social capital and general rates of deviance in all provinces of Iran.