Osanori Koyama (小山 長規, Koyama Osanori, June 10, 1905 – January 31, 1988) was a Japanese politician, a member of the National Diet and a Cabinet member.
In 1929, he graduated from Faculty of Law, Tokyo Imperial University (now University of Tokyo)[1][2] and joined Mitsubishi Bank.[1] Later, he served as the committee chairs of Mitsubishi Bank Employees' Union.[1]
He was first elected to a member of the House of Representatives in 1949[1] and was elected 12 times.[2] He served as Minister of Construction in the Cabinets of Hayato Ikeda and Eisaku Satō, Director General of Environment Agency in the Cabinet of Kakuei Tanaka, the chief of Judge Impeachment Court, and the Chairs of Committee on Agriculture, Forestry and Fisheries and Committee on Budget of the House of Representatives.[1][2] He received the Grand Cordons of the Order of the Rising Sun in 1976.[2]
