The Relationship Between Transformational Leadership and organizational Entrepreneurship Among Clinical Laboratories staff of Tehran university of Medical Sciences Hospitals

New centuries’ organizations use leadership skills for application of organizational entreprenership. In this circumstances, the role of transformational leadership are more effective. Therefore, this research was aimed to determine the relationship between transformational leadership and organizational entrepreneurship among clinical laboratories’ staff of Tehran University of Medical Sciences (TUMS) in 2018. This was a descriptive – analytical and cross-sectional study induced among 126 clinical laboratories staff of TUMS hospitals. The research tool were transformational questionnaire with 20 questions and organizational entrepreneurship with 31 questions which their validity and reliability were confirmed. The collected data was analyzed by SPSS-22 and used frequency, percent, average, standard deviation, for presentation of descreptive results and Pearson, Anova, T-test techniques for analytical results. Findings: The results showed the averages of transformational leadership and organizational entrepreneurship were over the medium in the clinical laboratories. Also, there was positive and direct correlation between transformational leadership and organizational entrepreneurship. Using transformational leadership by clinical laboratories directors cause opportunities, improvement, and increased staff satisfaction and finally organizational productivity, trust climate between directors and staff for attaining the organizational goals and increased participation by negotiation and attract public commitment for providing the organizational entrepreneurship and innovatin.