There have been many studies of the impact of external and internal conditions on leadership, but in the scientific literature there are no studies of the influence of the leadership style on the company's strategy. This study examines the impact of the company's strategy on the type of leadership. For this, an empirical study was conducted, based on a survey of more than 450 respondents. The results of the study provide convincing empirical evidence that Porter's core competitive strategies, the "Best Value" and "Blue Ocean" strategies have a significant impact on leadership. Market strategies (broad and niche strategies) have a limited impact on leadership. The practical consequences of this study are that managers need to adapt the leadership style depending on the strategies being implemented. At the stage of strategic planning, the leadership abilities of the organization should be evaluated. Future studies should investigate whether these effects soften by external competitive conditions, and to find out the indirect influence of leadership on the effectiveness of the organization.