Given the importance of social capital in organizations, this research answers the question of how socioemotional wealth importance (SEWi), family human capital and family social capital influence organizational social capital in small family firms. Based on a sample of 334 small family businesses from the Biobío Region in Chile, a partial least squares structural equation modeling analysis (PLS-SEM) was performed. The results do not provide support for the predicted direct influence of family social capital on organizational social capital, but they support an indirect influence through SEWi and family human capital, both of which have a direct and positive influence on family firms’ organizational social capital. This means that SEWi and family human capital play a central role in generating organizational social capital in small family firms. It also suggests that both ability and willingness of family businesses play a role in allowing these firms to successfully transfer social capital from the family to the business system.