Social capital is one of the most important assets of any organization and it plays essential role in reaching organizational objectives. In this paper, we present an empirical study to study the effect of social capital on job satisfaction and citizenship behavior. The proposed study is performed among 240 employees who work for Allameh Tabataba’i University in Iran. The study designs a questionnaire in Likert scale and distributes it among selected employees and, using structural equation modeling, investigates the role of social capital on job satisfaction as well as citizenship behavior. The preliminary results of our survey indicate that social capital positively influences on both mentioned variables.