Leadership is the ability to influence a group toward the achievement of a vision or set of objectives. A leadership theory help to understand, predict, and control successful leadership. Example of leadership theories include trait, behavioural and contingency theory. This essay will discuss about the leadership skills of King of Thailand His Majesty King Bhumidol Adulyadej. The first part will give some details and backgrounds about who the King of Thailand is. Then, the second part will talk about his personal traits and the third part will discuss about his leadership behaviours. Finally, the last part will discuss about the ability to change his style in different circumstances or contingency theory of leadership.