Mitsujirō Ishii (石井 光次郎, Ishii Mitsujirō; 18 August 1889 – 20 September 1981) was a Japanese politician who served as Speaker of the House of Representatives from 1967 to 1969 and Deputy Prime Minister from 1957 to 1958, among other cabinet positions. He was a faction leader and candidate for the premiership in the early Liberal Democratic Party (LDP). Born in Fukuoka Prefecture, Ishii had a business career in Asahi Shimbun Company before entering politics after the war. He was a member of the House of Representatives from 1946 to 1947 and from 1952 to 1972. In 1955, he played a major role in the merger of Japan's conservative parties into the LDP and, in 1956, led a delegation to meet Taiwan's Chiang Kai-shek. Ishii served as cabinet minister at numerous times, beginning with a stint as Minister of Commerce and Industry in 1947. He was Deputy Prime Minister of Japan from 1957 to 1958 and Speaker of the House of Representatives from 1967 to 1969.
Source: “Mitsujirō Ishii”, English Wikipedia (CC BY-SA 4.0), excerpt