The purpose of the study is to explore the similarities and dissimilarities between project manager’s leadership competencies and styles. The project manager’s leadership gained greater attention in organizations and research as a one of the potential contributors to both project success and project failure. In last one decade, the term leadership competencies and styles have been used frequently, collectively and interchangeably in research about project manager’s leadership. The influence of project managers’ styles and/or competencies has been examined in the past, but yet any substantial study has rarely been conducted to highlight differentiate, prioritize and address the perplexity regarding similarities and/or dissimilarities among project manager’s leadership competencies and styles. The leadership styles and competencies have been synthesized for better familiarity and understanding. The outcome shows that project manger’s leadership competencies and styles are not absolutely similar but they also differ to some extent due to having their own characteristics.