Knowledge management (KM) is known as the most important element to achieve competitive advantage in organizations. KM helps organizations to identify and organize the important information and skills that they consider to be organizational memory. This will enable the organization to solve problems, strategic planning and dynamic decision making. Since the purpose of small and medium-sized enterprises in developing countries is to reach the global market and get more productive, then implementing knowledge management can play an effective role in acquiring knowledge and attaining these goals. Presently, few studies have been accomplished on the implementation of knowledge management in small and medium-sized enterprises in developing countries. Due to the occurrence of unanticipated event for implementation of KM in small and medium-sized enterprises, an uncertainty model in this regard is essential. Therefore, the purpose of this study is to provide an uncertainty model based on SECI for choosing the best knowledge management strategy in small and medium-sized enterprises with hesitant fuzzy decision making methods. According to result of this research, the target of promoting innovation is of the most importance, followed by improvement of performance and activation of priority information, respectively.
