This research aimed to determine whether the environmental performance and Good Corporate Governance (GCG)
mechanisms, such as managerial ownership, institutional ownership, the proportion of independent commissioners
had effects of the audit committee on measured financial performance by using Return on Equity (ROE). This
research population was manufacturing company listed on Indonesia Stock Exchange that participated in PROPER
2012/2013 and 2013/2014. Based on the multiple regression analysis, audit committee partially had a significant
effect on financial performance, while the others did not. Meanwhile, the analysis result shows that environmental
performance and all GCG mechanisms simultaneously have significant effects on financial performance.