The purpose of the present study was to investigate the relationship between the use of knowledge management and the sustainable performance of companies listed on the Tehran Stock Exchange, considering the mediating role of modern financial technologies and business intelligence. The statistical sample of the present study was made up of 441 senior managers of the studied companies with at least 5 years of work experience. A questionnaire was used to collect data, and its validity and reliability were confirmed. After collecting the data, the structural equation modelling method was used in SmartPLS software. The results of the research hypotheses test showed that knowledge management has a positive effect on sustainable performance and directly predicts 0.748 of the changes related to sustainable performance. Also, the analysis of the results showed that knowledge management through modern financial technologies and business intelligence has a positive effect on the sustainable performance of companies admitted to the stock exchange. Based on this, it can be said that the implementation of knowledge management dimensions along with the use of modern financial technologies and business intelligence such as blockchain technology can help the studied companies in achieving sustainable performance.