This study investigates the relationship between the three dimensions of social capital and the three aspects of supply chain colaboration (information sharing, joint decision making and benefit/ risk sharing). Through a survey of 249 companies in Vietnam, this study shows that the effects of social capital aspects on the three aspects of supply chain collaboration are different. The results of this study not only provide an overview of the relationship between social capital and supply chain colaboration, but also provide empirical evidence to support the argument of previous studies on the impact of social capital on knowledge sharing, benefit/ risk sharing and joint activities between supply chain members. Besides, based on the results of the study, the author also proposed a few suggestions for the managers to build and maintain long-term relationships in the supply chain