Muhammad Alfi Syahrin Zamni Arsyad Banjari, The Effect of Carbon Emission Disclosure, Green Innovation, and Eco-Efficiency on Firm Value in Manufacturing Sector Companies Listed on the Indonesia Stock Exchange, Yana Ulfah. This study aims to test and analyze the effect of carbon emission disclosure, green innovation, and eco-efficiency on firm value in manufacturing companies listed on the Indonesia Stock Exchange (IDX) in 2018-2022. carbon emission disclosure is measured using the amount of carbon emission disclosure, green innovation is measured using a ratio scale, eco-efficiency is measured using dummy variables based on ISO 14001certification attached to the sustainability report, and firm value is measured using Tobin's Q ratio. The type of data used is secondary data which includes annual reports and sustainability reports. Hypothesis testing using panel data regression with Eviews version 12. The results of this study reveal that carbon emission disclosure and green innovation have a positive and significant effect on firm value while ecoefficiency does not have a significant effect on firm value.