This study examines the dynamic relationship between CO2 emissions, Islamic financial development and economic growth in Indonesia, using the Environmental Kuznets Curve (EKC) approach over the period 2000-2018. Employing ARDL and ECM testing to examine the existence of long- and short-run relationships between the variables, we found that no EKC’s support existence in Indonesia. The study also found no dynamic short-run relationship between growth, Islamic finance development and CO2 emissions. The long-run findings suggest that CO2 emissions from transport; other sectors, excluding residential buildings and commercial and public services; and the residential buildings and commercial and public services sectors are significantly associated with Islamic finance development in Indonesia. Hence, the findings of the study show that the country may need to adjust its CO2 emissions and promote eco-friendly and energy-saving activities to protect nature through Islamic finance development Strength and cost-efficiency.based financial sector development, especially in improved loans for business, would be valuable to limit CO2 emissions