The purpose of this paper is to examine the effect of internal marketing, organizational justice and organizational commitment. A quantitative survey methodology was adopted to collect data from private banks' employees in Isfahan. A sample of 280 employees within 20private banks was used. Data were analyzed using AMOS 16.0 to determine the interactions between the various factors. This study contributes to the literature by examining organizational commitment in light of employee's perception of organizational justice and internal marketing using structural equation modeling to explore the complex relationship among the organizational factors .Empirical findings confirmed that internal marketing and organizational justice had a positive direct effect on organizational commitment. Employees ' perception of organizational justice was positively related with their level of organizational commitment. In addition, perception of distributive justice had great impact on the employee's organizational commitment.