This research project critically evaluates the impact of leadership on the sales, performance, and operations of Starbucks, serving as a comprehensive case study. The report begins with an introduction outlining the research background, rationale, aims, objectives, and research questions, alongside a Gantt chart for project management. Chapter 2 provides a literature review, exploring the effectiveness of leadership in organizations, Starbucks' performance in the international market, and the specific impact of leadership on sales, performance, and operations. The methodology, detailed in Chapter 3, covers the research design, approach, philosophy, data collection techniques, and sampling and data analysis methods. Chapter 4 presents the data analysis, and Chapter 5 concludes with findings, conclusions, and recommendations, offering insights into enhancing Starbucks' performance through effective leadership strategies. The research underscores the importance of leadership in driving organizational success, particularly within a global context, and provides actionable recommendations for improvement.