This study aimed to examine the influence of Good Corporate Governance (GCG) mechanism toward company profitability. GCG mechanism is proxied by institutional ownership, independent board, board of directors and audit committee. The company's profitability is measured by Return On Asset (ROA). Population in this research is the company's state-owned enterprises (SOE) that are listed on IDX in 2012-2014. The sample selection technique is using purposive sampling method. Based on the criteria that have been determined,12 companies chosen as sample. The type of data used are secondary data in the form of annual reports and financial statements. Data analysis techniques is using multiple linear regression analysis. The results of this study showed that simultaneously, institutional ownership variable, independent board, board of directors, and audit committees have a significant effect on ROA. Partially, institutional ownership has a positive and significant effect on ROA. Independent board has negative and significant effect on ROA. While another GCG mechanism proxy, which are the board of directors and audit committee have a positive effect but not significant on ROA.