Koichi Yamamoto

Koichi Yamamoto (山本 公一, Yamamoto Kōichi, born September 4, 1947) is a Japanese politician of the Liberal Democratic Party, a member of the House of Representatives in the Diet (national legislature).

Kōichi Yamamoto
山本 公一
Minister of Environment
In office
3 August 2016  3 August 2017
Prime MinisterShinzō Abe
Preceded byTamayo Marukawa
Succeeded byMasaharu Nakagawa
Vice Minister for Internal Affairs and Communications
In office
29 September 2004  21 September 2005
Prime MinisterJunichiro Koizumi
Preceded byHiroshi Imai
Succeeded byYoshihide Suga
Personal details
Born (1947-09-04) September 4, 1947
Uwajima, Ehime, Japan
Alma materKeio University

Background and profile

A native of Uwajima, Ehime and graduate of Keio University, Yamamoto is the son of Yuichi Yamamoto, the mayor of Uwajima, and a member of the House of Representatives.

Yamamoto was elected to his one term in the assembly of Aichi Prefecture in 1991 and to the House of Representatives for the first time in 1993.

His profile on the LDP website:[1]

  • Member, Ehime Prefectural Assembly
  • Parliamentary Vice-Minister of Environment(Hashimoto Cabinet)
  • Senior Vice-Minister for Internal Affairs and Communications(Koizumi Cabinet)
  • Deputy Chairman, General Council of LDP
  • Director, Land, Infrastructure and Transport Division of LDP
  • Chairman, Fundamental National Policies Committee of Diet


Affiliated to the openly revisionist lobby Nippon Kaigi,[2] Yamamoto gave the following answers to the questionnaire submitted by Mainichi to parliamentarians in 2012:[3]

  • in favor of the revision of the Constitution
  • in favor of right of collective self-defense (revision of Article 9)
  • in favor of reactivating nuclear power plants
  • against the goal of zero nuclear power by 2030s
  • in favor of the relocation of Marine Corps Air Station Futenma (Okinawa)
  • in favor of evaluating the purchase of Senkaku Islands by the Government
  • in favor of an attitude avoiding conflict with China
  • against the participation of Japan to the Trans-Pacific Partnership
  • against a nuclear-armed Japan
  • no answer regarding the reform of the National assembly (unicameral instead of bicameral)
  • no answer regarding the reform of the Imperial Household that would allow women to retain their Imperial status even after marriage


  1. Profile of Yamamoto Kouichi on the LDP website: jimin.jp/english/profile/members/114796.html
  2. Nippon Kaigi website
  3. Mainichi 2012: senkyo.mainichi.jp/46shu/kaihyo_area_meikan.html?mid=A38004003003
  • 政治家情報 〜山本 公一〜. senkyo.janjan.jp (in Japanese). JANJAN. Retrieved 2007-10-16.
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