of Company Characteristics and Regulation Factors on the Quality of Implementation of Corporate Governance in Companies Listed on the Indonesia Stock Exchange (BEI) 2010-2014. Characteristic factors of the company used are investment opportunities, the concentration of ownership, leverage, size of the board of directors and firm size. Measuring the quality of corporate governance is based on the rating conducted by the Indonesian Institute for Corporate Governance (IICG) known as the Corporate Governance Perception Index (CGPI). The sample in this research are the companies included in the top ten rankings of Corporate Governance Perception Index (CGPI), which is listed on the Indonesia Stock Exchange (BEI). Total sample is 78 companies selected by purposive sampling method. The research hypotheses were tested using Multiple Linear Regression. The results of this study found that the size of the board of directors, Bank and Non Bank industry types and categories BUMN and non BUMN have a significant effect on the quality of corporate governance. Meanwhile, investment opportunities, concentration of ownership, leverage, and the size of the company had no significant effect on the quality of corporate governance.