Vũ Văn Mẫu was a South Vietnamese diplomat and politician, who was the last Prime Minister of South Vietnam, serving under President Dương Văn Minh's leadership in 1975. He held the position for only two days before the collapse and surrender of South Vietnam on 30 April 1975.

This is a list of leaders of South Vietnam, since the establishment of the Autonomous Republic of Cochinchina in 1946, and the division of Vietnam in 1954 until the fall of the Republic of Vietnam in 1975, and the reunification of Vietnam in 1976.