The main target of this research is to investigate relationship between dimensions of promotion of organizational performance and employees' empowerment. The research is a descriptive-correlation study. Statistical population of the research included all employees of National Bank in Tonekabon City. 120 employees were selected by means of single-stage cluster random sampling. A questionnaire for evaluation of dimensions of promotion of organizational performance containing 35 questions and

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... zer's empowerment questionnaire (1995) containing 12 questions was used for collecting data. Validity of the questionnaires was verified by assistant professors and other experts. Reliability of the questionnaires was calculated by means of Cronbach's alpha. It was equal to 0.85 for organizational performance promotion questionnaire and equal to 0.86 for empowerment questionnaire. Data were analyzed by means of Pearson correlation coefficient and multivariate regression. The results showed that there is a positive and significant relationship between dimensions of organizational performance promotion (organizational learning, knowledge management, organizational performance) and employees' empowerment in branches of national bank in Tonekabon (p<0.01). Knowledge management had the greatest role in prediction of employees' empowerment.