This study aims to explore the effective engineering leadership competencies and understanding engineering leaders’ role in achieving sustainable smart manufacturing (SSM) with focus on contemporary era (2000-2020). There will be an attempt to provide better understanding of the definition of engineering leadership and its importance in the future in the light of Industry 4.0. Besides, it intends to explore the main leadership competencies that engineers need to balance and achieve TBL sustainability and explore the common challenges and obstacles. Using the literature review approach, the study is based on a multidisciplinary approach that combines three different disciplines, namely engineering leadership, sustainability leadership and leadership 4.0. The study’s novelty lays in merging all these different leadership approaches together in one study. The study showed that most engineering leadership research focused on entry-level engineers to equip them with essential non-technical skills. in the majority of the engineering leadership studies related to population size, no general agreement of what engineering leadership is, use of different leadership models, and investigation of different leadership levels, sectors, and geographical areas because most of the studies have been conducted in Canada and the USA. The study also showed that sustainability is one of the fundamental goals of Industry 4.0. Although smart SM and Industry 4.0 have drawn the interest of the science community and industry in recent years, attempts to analyse the state of the art of these two emerging paradigms still lack in the literature. The situational, transformational, transactional, and authentic leadership styles appeared more than others in the reviewed studies. Finally, the results of the study will help industry to recruit effective leaders and improve leadership programme development. It will boost the engineering curriculum to prepare future engineers with the required leadership competencies required by the industry to overcome obstacles during the new industrial revolution.