The role of social capital in organizational entrepreneurship, which is emphasized today by many organizations, has been examined in this article. At first, we discuss the concept of organizational entrepreneurship, and then put forth the study that has been done by Liao and Welsch. We can classify the studies about organizations in three categories: the first category focuses on "the person", the second on "the process", and the third on "the rate". Because the concept of social capital contributes to the understanding of organizational entrepreneurship, we first explore the social capital based on each category, and then divide it into three dimensions - Structural, Relational, and Cognitive - and finally examine the relationship of each dimension with "propensity" and "ability", these are necessary for organizational entrepreneurship. At the end, we present a model of social capital.