Nguyễn Ngọc Thơ (26 May 190812 June 1976) was a Vietnamese politician who was the first Prime Minister of South Vietnam, serving from November 1963 to late January 1964. Thơ was appointed to head a civilian cabinet by the military junta of General Dương Văn Minh, which came to power after overthrowing and assassinating Ngô Đình Diệm, the nation's first president. Thơ's rule was marked by a period of confusion and weak government, as the Military Revolutionary Council (MRC) and the civilian cabinet vied for power. Thơ lost his job and retired from politics when Minh's junta was deposed in a January 1964 coup by General Nguyễn Khánh.