摘要:The aim of this research is to examine the influence of asymmetry information and voluntary disclosure, both simultaneously and partially, toward cost of capital on listed companies from the manufacturing sector at the Indonesia Stock Exchange (BEI) for the year 2007-2010. By using census method and balanced panel data, there are 26 of the population total from companies of manufacturing sector fulfill the population criteria during 4 years of the observation. The results show that (1) asymmetry information and voluntary disclosure simultaneously have influence toward the cost of capital on listed companies from the manufacturing sector at the Indonesia Stock Exchange (2) asymmetry information has influence toward the cost of capital on listed companies from the manufacturing sector at the Indonesia Stock Exchange (3) voluntary disclosure has influence toward the cost of capital on listed companies from the manufacturing sector at the Indonesia Stock Exchange. Keywords: Cost of capital, asymmetry information, and voluntary disclosure