This research aims to determine the effect of institutional ownership on carbon emissions disclosure, with leverage, number of top executives, company age, company size, and profitability as control variables. The sample in the research was non-financial companies listed on the Indonesia Stock Exchange, but during the research, several companies were eliminated due to incomplete data from 2018-2022. After statistical analysis and modelling, this research found that institutional ownership influences carbon emissions disclosure. In addition, control variables that influence carbon emissions disclosure are the number of top executives, company age, and company size. So the results of this research are in line with the proposed hypothesis. Although this research is limited in the available sample size because not all companies disclose carbon emissions, its novelty lies in the fact that disclosing carbon emissions for all non-financial companies in Indonesia is still an interesting topic to research related to the issue of climate change and global warming.