Knowledge management is one of the ways to improve the survival conditions of the organization and it is successfully implemented in the organization when the cultural context appropriate to this system has already been established. Identifying the organizational culture and its effects on different organizational dimensions creates effective and complete knowledge for the implementation of the environmental management system. Therefore, by identifying the elements of organizational culture and its impact on the organization, it is possible to achieve a suitable result for the successful implementation of environmental programs. The purpose of this research is to examine the relationship between organizational culture and the establishment of knowledge management, taking into account leadership styles in Butia Iranian Steel Company. The statistical population of this research includes all the company's experts and managers, 90 of whom were randomly selected (60 experts, 30 managers). To collect data, three questionnaires of Edgarshine's organizational culture (reliability 0.912), Lawson's knowledge management (reliability 0.817) and Clark's leadership style (reliability 0.795) were used. SPSS version 27 software was used for data analysis The results show that at the 95% confidence level, there is a direct and meaningful relationship between organizational culture and leadership style with knowledge management, and this means that the better the state of organizational culture, the higher the level of knowledge management, and the more collaborative the leadership style, the more effective it will be. It will pay attention to the establishment of the knowledge management process, and finally, the multiple regression equation for the prediction of knowledge management through organizational culture and leadership style was calculated.