The growing awareness of environmental and social issues has led to an increased demand for corporate accountability and transparency. Amidst the growing global emphasis on sustainability, understanding how CEO characteristics influence ESG initiatives is crucial. Existing research suggests that CEO personality traits, including narcissism, can significantly impact a firm's strategic decisions and performance. While studies have examined this relationship in other countries, very limited studies have been done in Indonesia. This study aims to bridge this gap by investigating the direct impact of CEO narcissism on ESG performance in Indonesia. This research relies on secondary data from CEO’s LinkedIn profile, as previous researches have utilized it to measure CEO narcissism level. Additionally, Bloomberg’s ESG score is adapted in this study to measure the cumulative and independent ESG performance of non-financial Indonesian firms listed on the Indonesian Stock Exchange from 2017-2022, culminating a total of 132 firm-year observations. Empirical results show that CEO narcissism significantly influences positively a firm’s social performance, whilst indicating insignificance towards overall ESG performance, environmental, and governance performance in Indonesia. This is due to the high societal welfare awareness constructed by the Indonesian labor union, and overall low awareness towards environmental and governance issues. Overall, this research presents that Indonesian CEOs, through their narcissistic characteristics, are becoming more socially responsible. However, they must aim for higher overall ESG performance, to operate significantly better.