摘要:Keyword: Key words: Corporate Governance, Tobin’s Q value.Abstrack:ABSTRACT:The purpose of this study is to investigate the empirical evidence that (i) Corporate governance affects the value of Tobin's Q (ii) Asset affects the value of Tobin's Q (iii) Growth affects the value of Tobin's Q. Corporate governance is measured by CGPI (Corporate Governance Perception Index) based on the rating that has been prepared by IICG (Indonesian Institute of Corporate Governance) and Corporate Performance is measured by the value of Tobin's Q. The statistical method used is multiple regression analysis. The samples were companies listed on the Jakarta Stock Exchange and following a survey conducted by IICG in 2005-2007 and included in the ranking CGPI. Based on the results of hypothesis testing can be concluded that corporate governance affects the value of the company's market performance.