This study aims to empirically test the effect of financial performance on firm value and prove that Corporate Social Responsibility (CSR) is a moderating variable that can strengthen the influence of financial performance on firm value. The stock price is one indicator that reflects the public's assessment in assessing the value of a company. The higher the value of the company, the level of prosperity of shareholders also increases. Measurement of firm value in this study using Tobin's Q, CSR is measured using content analysis, and ROA measures financial performance. Manufacturing companies listed on the Indonesia Stock Exchange from 2017-2020 were used as samples with criteria. The results show that financial performance positively affects firm value, and CSR is a moderating variable in the relationship between financial performance and firm value.