Examining the role of social capital in increasing the firm performance is the aim of this current study. This research uses quantitative approach with explanatory research type. SPSS is the tool of analysis which is used in this research. The research sample is the mining industry which was listed in the Bursa Efek Indonesia (BEI) and the sample is selected using purposive sampling method. The result shows that social capital could increase the firm performance. This study contribute to the agency theory and stakeholder theory which discuss the conflict of interest between shareholder, stakeholder and firm management.