The purpose of this study is to examine the effect of the project manager’s competence on project performance and identify the moderating effect of organizational culture. For doing this, regression analysis was conducted by using SPSS, Results are as follows. First, it was found that in terms of the project manger's competence, job performance positively influenced project performance. Second, as for job performance, not only servant leadership and super leadership in leadership styles but also interpersonal competence had an affirmative effect on organizational performance. Third, it revealed that a hierarchical culture that is one of organizational cultures moderated the relation between the project manager's competence and the management of the project. Also, it was found that a group culture and a hierarchical culture played a moderating role in the relation between the project manager's competence and the completion of the project. This study is meaningful because it verified the moderating effect of organizational culture m the relation between the project manager's competence and job performance. It suggests that further studies considering the business environment and the system, and a type and a characteristic of the project should be necessary.