The aim of this study is to investigate the role of Islamic Corporate Social Responsibility in moderating the effect of zakat on Islamic commercial banks’ financial performance. Out of 13 Islamic commercial bank listed by Otoritas Jasa Keuangan from 2012 to 2017, there were only five banks reporting Statement of Zakat Fund Sources and Disbursements. Hence, the final samples of this study consist of 30 observation data. Secondary data collected from 30 annual reports were gathered through documentation. This study utilizes moderated regression analysis to test three research hypotheses. The results shows several findings. Firstly, the amount of corporate zakat being reported in the Statement of Zakat Fund Sources and Disbursements has positive impact on Islamic banks’ financial performance. Secondly, Islamic CSR as measured by Islamic reporting index developed by Belal et al. (2015) has negative impact on Islamic Banks’ financial performance. Thirdly, the role of Islamic CSR in moderating the effect of zakat on financial performance was confirmed.