In the present era, all organizations need knowledge in order to manage diverse human resources to reduce costs. So the use of knowledge management to solve problems, Reduction of costs, strategic planning and decision making in an organization is essential and inevitable. IRIB, as one of the most important organizations providing services to a significant portion of the population, needs knowledge management to facilitate systematic approach to the creation, reception, access and use of knowledge in this organization. The purpose of this paper is to prioritize effective factors in the development of knowledge management in IRIB Organization. Therefore, first by using a library study and interviewing experts of the media and knowledge management, factors affecting the knowledge management in the IRIB organization were identified. In the next step, the priority of the effectiveness of each of these factors was determined by using a hierarchical analysis in AHP software. Based on the results, top managerial support, organizational infrastructure, staff empowerment, organizational culture, organizational learning, information technology, team building, performance evaluation and common target-language are ranked first to ninth. Accordingly, at the end of this article, related suggestions are also provided to facilitate the process of maturing knowledge management in the reduction of costs of IRIB organization