The movement towards knowledge-based management and administration in today's world and achieving competitive excellence in organizations has made knowledge sharing an important issue. In other words, the lack of knowledge sharing in the organization leads to inefficiency in organizational knowledge management. The purpose of this study is to explain and localize the effective cultural components in knowledge sharing in order to provide solutions for knowledge sharing improvement. The present study seeks to extract the cultural components effective in knowledge sharing by using structural equation modeling. For this purpose, by reviewing the research literature, effective cultural components in knowledge sharing in the form of 8 components are identified. Then, based on the identified components, a researcher-made questionnaire is designed in the form of 36 items. The statistical population of this study includes all the officials of a government organization comprising of 75 personnel, utilizing the counting method due to the limitation of the population. The research method of this descriptive-survey research using structural equation modeling with Smart Pls software and measurement tool is a five-choice questionnaire based on Likert scale. Cronbach's alpha and combined reliability (CR) are used to evaluate the reliability of the data collection tool, whilst in addition to face validity, the AVE tool is used to evaluate the validity. The results of the analysis of the research findings show that among the identified cultural components, the components of trust, organizational communication, commitment, participation and cooperation and teamwork, reward and encouragement and support have the most positive impact in descending order on the employee knowledge sharing. of course, three other cultural components (leadership and learning and enrichment) which are certainly influential in knowledge sharing have not become significant in this study.