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.

Dương Văn Minh, popularly known as Big Minh, was a South Vietnamese politician and a senior general in the Army of the Republic of Vietnam (ARVN) and a politician during the presidency of Ngô Đình Diệm. In 1963, he became chief of a military junta after leading a coup in which Diệm was assassinated. Minh lasted only three months before being toppled by Nguyễn Khánh, but assumed power again as the fourth and last President of South Vietnam in April 1975, two days before surrendering to North Vietnamese forces. He earned his nickname "Big Minh", because he was approximately 1.83 m (6 ft) tall and weighed 90 kg (198 lb).