This study aims to determine the effect of profitability growth opportunity liquidity on capital structures listed on the Indonesia Stock Exchange in 2016-2018. The population in this study were 45 companies in various industry sectors and obtained a sample of 7 companies, where the method used was purposive sampling, which is a sampling method by establishing the criteria in the study. The results of this study indicate that profitability has no significant effect on capital structure. growth opportunity and liquidity have a significant effect on capital structure. The method used in this study uses the normality test and the classic assumption test of multiple linear regression analysis.