The aim of the current research is to provide a model of the effectiveness of organizational culture in knowledge sharing and organizational innovation on expanding competitive advantage in wire and cable companies in Yazd province from 2018 to 2023. The current research is a descriptive and quantitative applied research and uses available sampling method. The statistical population of the research includes all the managers of wire and cable companies in Yazd, and the statistical sample includes 50 selected managers and experts of the wire and cable industry in Yazd, whose information has been collected over a 5-year period. In this research, four variables of competitive advantage, knowledge sharing, organizational culture and organizational innovation were selected as research variables, and the measurement of these variables was done according to the theoretical framework of the research in the form of a questionnaire and in the form of a Likert scale. The findings of the present research show that organizational culture is an influencing factor on competitive advantage and most of its impact is directly on competitive advantage. Also, organizational culture has a significant impact on organizational innovation and knowledge sharing, and these two variables also show a significant relationship with competitive advantage.