The purpose of this research is to empirically investigate the relationship between leadership styles and employees' performance with mediating role of organizational justice in Egyptian higher education institutions (HEIs). The objectives of This research are: to investigate the relationship between leadership styles and Employees' performance in Egyptian HEIs, to examine the relationship between leadership styles and organizational justice in Egyptian HEIs, to identify the relationship between organizational justice and Employees' performance in Egyptian HEIs, to test the moderation role of university type in the relationship between leadership styles and Employees' performance in Egyptian HEIs, to investigate the mediation role of organizational justice between leadership styles and Employees' performance in Egyptian HEIs using structural equation modelling. The methodology will be based on quantitative analysis by using a questionnaire tool to gather required data and structural equation model analyses (SEM) using AMOS software version 26. The main conclusions drawn from this study are: the direct effect between Leadership Style and Employees Performance is statistically significant, the direct effect between Leadership Style and Organizational Justice is statistically significant, the direct effect between Organizational Justice and Employees Performance is statistically significant. Finally, the study found that the results of the mediation effect indicate that there is partial mediation effect of the Organizational Justice between the relationship of Leadership Style Employees Performance.