Nguyễn Bá Cẩn (9 September 1930, in Cần Thơ – 20 May 2009, in San Jose, California) was a South Vietnamese politician who served as Prime Minister of South Vietnam from 5 April 1975 until 28 April 1975; serving under Presidents Nguyễn Văn Thiệu (5 April to 21 April) and Trần Văn Hương (21 April to 28 April). Early life and political career He was born on September 9, 1930 in Cần Thơ, Cochinchina, French Indochina into a well-to-do peasant Catholic family. After graduating from college with a baccalaureate, he enlisted in the army to study in the First Course of the Thu Duc Reserve Officers Student in 1951. After graduating in 1953, he continued to register and pass the entrance exam to the National School of Administration in 1954 and graduated as valedictorian in administration in 1957. Started his political career with the position of Chief of Cái Bè District, Định Tường (1958); Deputy Governor Định Tường (1959); Deputy Governor Phước Tuy (1962); then Deputy Governor of Long An Province (1964). In 1967 during the Second Republic, he was elected to the National Assembly as a member of Định Tường province, then was appointed as the Second Vice Chairman of the House of Representatives. At the end of 1967, he cooperated with Congressman Đặng Văn Sung of the Alliance of Farmers and Engineers in the Senate to establish the Bicameral Social Democratic Union. In 1969, this bloc joined forces with Mr. Trần Quốc Bửu, Chairman of the Vietnam General Confederation of Workers, to establish the Vietnam Workers' Party, with Mr. Trần Quốc Bửu as Chairman, and he became General Secretary. During the second term (1971–1975) of the National Assembly, he was elected Speaker of the House of Representatives. Prime Minister of South Vietnam (1975) In March 1975, after the army of North Vietnam had taken control of most of the Central region and the highlands, under pressure from the United States, there was a need for a sweeping reform of the composition of the government to stabilize the country, internal affairs in the South and had enough strength to engage in dialogue with the Communists, President Nguyễn Văn Thiệu invited him to take the position of Prime Minister, replacing the incumbent Prime Minister Trần Thiện Khiêm who had just resigned. On April 14, 1975, he presented the Cabinet list with the title "Government of National Unity" to President Thiệu.