Bảo Đại (Chữ Nôm: 保大, lit. "keeper of greatness", 22 October 1913 – 30 July 1997), born Nguyễn Phúc Vĩnh Thụy, was the 13th and final emperor of the Nguyễn Dynasty, which was the last dynasty of Vietnam. From 1926 to 1945, he was king of Annam. During this period, Annam was a protectorate within French Indochina, covering the central two-thirds of the present-day Vietnam. Bảo Đại ascended the throne in 1932.
The Japanese ousted the Vichy-French administration in March 1945 and then ruled through Bảo Đại. At this time, he renamed his country “Vietnam”. He abdicated in August 1945 when Japan surrendered. From 1949 until 1955, Bảo Đại was the chief of state of the State of Vietnam (South Vietnam). Bảo Đại was criticized for being too closely associated with France and spending much of his time outside of Vietnam. Prime Minister Ngô Đình Diệm eventually ousted him in a fraudulent referendum vote in 1955.
It has been widely held that Vietminh or Ho Chi Minh founded the independent Democratic Republic of Vietnam alone. However, Stanley Karnow in "Vietnam - A History" argued that "Nothing has reinforced the Vietminh cause more than the mercurial Bao Dai's decision to abdicate. For his gesture conferred the 'mandate of heaven' on Ho, giving him the legitimacy that, in Vietnamese eyes, had traditionally resided in the emperor."