The purpose of this study was to examine the effect of Environmental Accounting Disclosure, Firm Size, and Growth Opportunity in Stock Return. This study uses panel data with 126 observation samples from mining companies listed on the Indonesia Stock Exchange in 2019-2021. The results of this study indicate that environmental accounting disclosure and growth opportunity have an effect on stock returns, while firm size has no effect on stock return. The implications of the study indicate that the more environmental accounting disclosure made by companies and high growth opportunity can increase stock prices and have a positive impact on stock return. Conversely, firm size is not an important indicator that investors pay attention to.