Eisaku Satō (佐藤 榮作, Satō Eisaku, 27 March 1901 – 3 June 1975) was a Japanese politician and the 39th Prime Minister of Japan, elected on 9 November 1964, and re-elected on 17 February 1967, and 14 January 1970, serving until 7 July 1972. He was the first Prime Minister to have been born in the 20th century.