1951 in Japan

Events in the year 1951 in Japan.

Incumbents

Emperor: Hirohito{{cite web |title=Hirohito {{!}} Biography, Accomplishments, & Facts |url=https://www.britannica.com/biography/Hirohito |website=Encyclopedia Britannica |access-date=27 March 2019 |language=en}}
Prime Minister: Shigeru Yoshida
Chief Cabinet Secretary: Katsuo Okazaki until December 26, Shigeru Hori
Chief Justice of the Supreme Court: Kōtarō Tanaka
President of the House of Representatives: Kijūrō Shidehara until March 10, Jōji Hayashi from March 13
President of the House of Councillors: Naotake Satō

=Governors=

Aichi Prefecture: Hideo Aoyagi (until 4 April); Mikine Kuwahara (starting 11 May)
Akita Prefecture: Kosaku Hasuike (until 4 April); Tokuji Ikeda (starting 30 April)
Aomori Prefecture: Bunji Tsushima
Chiba Prefecture: Hitoshi Shibata
Ehime Prefecture: Juushin Aoki (until 4 April); Sadatake Hisamatsu (starting 4 May)
Fukui Prefecture: Harukazu Obata
Fukuoka Prefecture: Katsuji Sugimoto
Fukushima Prefecture: Sakuma Ootake
Gifu Prefecture: Kamon Muto
Gunma Prefecture: Yoshio Iyoku
Hiroshima Prefecture: vacant (until 24 January); Hiroo Ōhara (starting 24 January)
Hokkaido Prefecture: Toshifumi Tanaka
Hyogo Prefecture: Yukio Kishida
Ibaraki Prefecture: Yoji Tomosue
Ishikawa Prefecture: Wakio Shibano
Iwate Prefecture: Kenkichi Kokubun
Kagawa Prefecture: Masanori Kaneko
Kagoshima Prefecture: Kaku Shigenari
Kanagawa Prefecture: Iwataro Uchiyama
Kochi Prefecture: Wakaji Kawamura
Kumamoto Prefecture: Saburō Sakurai
Kyoto Prefecture: Atsushi Kimura
Mie Prefecture: Masaru Aoki
Miyagi Prefecture: Kazuji Sasaki
Miyazaki Prefecture: Tadao Annaka
Nagano Prefecture: Torao Hayashi
Nagasaki Prefecture: Sōjirō Sugiyama (until 26 May); Takejirō Nishioka (starting 26 May)
Nara Prefecture: Mansaku Nomura (until 14 April); Ryozo Okuda (starting 30 April)
Niigata Prefecture: Shohei Okada
Oita Prefecture: Tokuju Hosoda
Okayama Prefecture: Hirokichi Nishioka (until 30 March); Yukiharu Miki (starting 3 May)
Osaka Prefecture: Bunzō Akama
Saga Prefecture: Gen'ichi Okimori (until 4 April); Naotsugu Nabeshima (starting 4 April)
Saitama Prefecture: Yuuichi Oosawa
Shiga Prefecture: Iwakichi Hattori
Shiname Prefecture: Fujiro Hara (until 4 April); Yasuo Tsunematsu (starting 4 May)
Shizuoka Prefecture: Takeji Kobayashi (until 4 April); Toshio Saitō (starting 4 April)
Tochigi Prefecture: Juukichi Kodaira (until 1 April); Goro Abe (starting 4 April)
Tokushima Prefecture: Goro Abe
Tokyo Prefecture: Seiichirō Yasui
Tottori Prefecture: Aiji Nishio
Toyama Prefecture: Kunitake Takatsuji
Wakayama Prefecture: Shinji Ono
Yamagata Prefecture: Michio Murayama
Yamaguchi Prefecture: Tatsuo Tanaka
Yamanashi Prefecture: Katsuyasu Yoshie (until 4 April); Hisashi Amano (starting 30 April)

Events

April 24 - Sakuragichō train fire
May 19 – According to Japan Fire and Disaster Management Agency official confirmed report, a fire in Ohara Cinema in Hamanaka, Hokkaido, the death toll number was 42.{{page needed|date=May 2020}}
July 11 – According to Japan Fire and Disaster Management Agency official confirmed report, a torrential heavy massive rain, affective Heiwa Lake collapsed in Kameoka, Kyoto Prefecture, killing 117 persons.{{citation needed|date=August 2021}}
July 15 – According to National Police Agency of Japan official confirmed report, an extra bus plunge into Tenryu River, Urakawa Town, (now Tenryu-ku, Hamamatsu), Shizuoka Prefecture, official death toll is 28 persons.{{page needed|date=May 2020}}
September 15 – An extreme Typhoon Ruth, a flood swept and landslide occur in Iwakuni area, Yamaguchi Prefecture, tidal wave hit in Satsunan Islands, according to Japanese government official confirmed report, in total 943 persons were killed, 2644 persons were wounded.{{page needed|date=May 2020}}
November 3 – During a regular route bus running, following caught fire in Uno Town (now Seiyo), Ehime Prefecture, 33 persons were perished, according to NPAJ confirmed report.{{page needed|date=May 2020}}
Unknown date – Japan National Mutual Insurance Federation of Agricultural Corporatives (JA Kyosai) was founded.{{citation needed|date=July 2020}}