This research aims to provide empirical evidence the effect of corporate social responsibility disclosure on the cost of capital on BUMN companies listed on the Indonesia Stock Exchange with an observation period from 2013-2017. The measurement of corporate social responsibility disclosure using Indeks Global Reporting Initiative G4 (GRI-G4). The cost of capital is divided into 2 namely the cost of equity using the Easton 2004 Model and the cost of debt using the Francis and Periera Model 2005. The sample selections method is the purposive sampling method which totals 13 samples with 65 observations. The results showed that the disclosure of corporate social responsibility has an influence on the cost of equity. Meanwhile, the disclosure of corporate social responsibility has no effect on the cost of debt.