This research is aimed to test the impact of corporate governance and public ownership structure on the extent of enterprise risk management disclosure toward manufacturing companies listed in Bursa Efek Indonesia period 2015- 2016. The tested variables are independent commissionary, the number of board of commissionary member, auditor’s reputation, the size of the company, and the public ownership structure. Using purposive sampling method, there are 162 manufacturing companies as samples, tested using multiple regression analysis. The research result shows that: 1) independent commissioner does not impact the extent of enterprise risk management disclosure in Indonesia, 2) the number of board of commissionary member does impact the extent of enterprise risk management disclosure, 3) auditor’s reputation does impact the extent of enterprise risk management disclosure, 4) the size of the company does impact the extent of enterprise risk management disclosure, and 5) public ownership structure does impact the extent of enterprise risk management disclosure.