Knowledge generation, transfer, distribution and sharing, and knowledge application are among the essential knowledge management processes. All these processes refer to the generation and acquisition of knowledge through the person's effort of innovative ideas. Thus, new knowledge is constantly generated within organisations. Then this knowledge or current ideas and information are transferred and distributed within the bank by exchanging information and experiences among employees and applying this knowledge to facilitate and obtain all employees data and information. In this study, the theoretical frameworks were reviewed in terms of the subject of this paper in the relationship between knowledge sharing and competitive advantage. The study clarified the relationship between knowledge management and competitive advantage on the leadership style. This study highlighted its contribution to enriching scientific Research in the field of management, especially in banks, and its knowledge management processes to achieve competitive advantage