This study aims to investigate the impact of peer knowledge sharing and leadership support on innovative and financial performance with the role of knowledge management success in the organization and with a practical approach in Tejarat Bank of Tehran. A questionnaire consisting of 19 questions with a five-point Likert scale was used to collect data. First, the questionnaire was approved from the perspective of experts in terms of content validity. Then, the validity of the structure was performed using confirmatory factor analysis technique. The value of AVE for all variables was above 0.5 and convergent validity was confirmed. Cronbach's alpha and composite reliability were calculated for reliability. Cronbach's alpha coefficient and CR value of all variables were obtained above 0.7. Therefore, the reliability of the questionnaire has been evaluated as desirable. The statistical population of this research is all the employees of Tejarat Bank of Tehran, 1364 people and the questionnaire was randomly given to 302 employees. To test the research hypotheses, the technique of partial least squares and Smart Pls software have been used. The results showed that all hypotheses are confirmed, ie the sharing of peer knowledge and leadership support have a significant impact on the success of knowledge management. Leadership support had a significant effect on peer knowledge sharing. Success in knowledge management and innovative performance have a significant impact on financial performance. Innovative performance also had a significant effect on financial performance