The present study examines the effect of organizational learning culture on organizational performance by considering the role of dynamic capacity as a mediator in an Iranian bank named Refah Bank. The study uses a questionnaire, which was originally developed by Hung et al. (2010) [Hung, R. Y. Y., Yang, B., Lien, B. Y. H., McLean, G. N., & Kuo, Y. M. (2010). Dynamic capability: Impact of process alignment and organizational learning culture on performance. Journal of World Business, 45(3), 285-294.] and examines different hypotheses using SPSS software package with the help of LISREL method. The results show that organizational learning culture and dynamic capacity positively influenced on organizational performance. In addition, organizational learning culture had a significant positive effect on dynamic capacity and dynamic capacity variable played the mediator role to the organizational learning culture as well as organizational performance.