Virtue in organizations refers to the creation, promotion, nurture and cultivation of behaviors, habits, actions and high and sublime tendencies such as the humanity, honesty, forgiveness, trust and loyalty on an individual and collective level. Social capital and social responsibility as two important factors play an essential role in organizations and society. The overall goal of this study is to explain the effect of social capital on organizational virtue with the mediating role of social responsibility. The type of research is applied in terms of purpose and in terms of the nature of the method is descriptive-correlation. The statistical population of the study is the customers of Ardabil Tejarat Bank. Three standard questionnaires, social capital, social responsibility, and organizational virtue were used to collect data. The validity was confirmed by confirmatory factor analysis method and its reliability was confirmed by Cronbach's alpha. In the data analysis of SPSS and PSL Smart software were used. In the analysis of hypotheses of structural equation modeling method has been used. According to the research findings, social capital has a positive and significant effect on organizational virtue, and among the dimensions of social capital, the dimension of trust has had the greatest impact on organizational virtue. Social responsibility also plays a mediating role between social capital and organizational virtue, and among the dimensions of social responsibility, the moral dimension has the greatest impact on organizational virtue. The findings of this study could be effective in moving organizations to wards more attention to virtue.