The increasing gap between firms' Market and Book Value has drawn wide research attention to exploring the invisible value omitted from financial statements. Some factors that impact on firms' value but don't release in financial statements are Brand value, Intellectual value. This research focuses on relationship between intellectual capital and firms' market value and financial performance of companies in Tehran stock exchange. For examining the intellectual capital, Value Added Intellectual Coefficient (VAIC) method, which was suggested in 2000 by Pulic has been used. VAIC measures the efficiency of three types of inputs: physical and financial capital, human capital, and structural capital. The study, analytically examines the separate effects of capital employed efficiency, human capital efficiency, and structural capital efficiency on market value and financial performance 90 companies listed in the Tehran Stock Exchange tested by linear regression. The results of the present study Market-to-book value ratio is negative related with value added intellectual coefficient This finding supports previews empirical research that has underlined the existence of an increasing gap between market and book value of organizations (Lev and This finding supports previews empirical research that has underlined the existence of an increasing gap between market and book value of organizations (Lev and Radhakrishnan, 2003; Lev and Zarowin, 1999; Lev, 2001). There is significant relationship between IC (measured with VAIC) and the financial performance measures (ROA).