This study aims to examine the effect of disclosure and earnings quality on the cost of equity. The theory used to explain the relationship of each variable in this study is agency theory and signal theory. The population used in this study is a manufacturing company listed on the Indonesia Stock Exchange for the period 2013-2017. The sample selection method used is the purposive sampling method and produced 87 companies as samples. Data analysis in this study used E-Views (Econometric Views). The results of this study succeeded in proving that the higher the disclosure and earnings quality can reduce the cost of equity.