Project stakeholders always strive for a successful project, hence there is growing concern about the factors that influence project success. Although the success of a project is influenced by various factors, project managers play a very important role. This study aims to examine the relationship and impact of construction project managers’ emotional intelligence (EI), managerial competencies, and transformational leadership style on project success. A total of 107 Pakistani construction firms were studied with a view to measuring the effects of these variables on the overall performance of construction projects. The results show that project managers with high emotional intelligence who bear the desired competencies and exhibit transformational leadership behavior are effective leaders and ensure higher success in projects than their counterparts. The findings will assist project sponsors in selecting the appropriate project managers for their projects.