1955 in Japan
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Events from the year 1955 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: Ichirō Hatoyama
- Chief Cabinet Secretary: Ryutaro Nemoto
- Chief Justice of the Supreme Court: Kōtarō Tanaka
- President of the House of Representatives: Tō Matsunaga until January 24, Shūji Masutani from March 18
- President of the House of Councillors: Yahachi Kawai
=Governors=
- Aichi Prefecture: Mikine Kuwahara
- Akita Prefecture: Tokuji Ikeda (until 29 April); Yūjirō Obata (starting 30 April)
- Aomori Prefecture: Bunji Tsushima
- Chiba Prefecture: Hitoshi Shibata
- Ehime Prefecture: Sadatake Hisamatsu
- Fukui Prefecture: Harukazu Obata (until 4 February); Seiichi Hane (starting 26 April)
- Fukuoka Prefecture: Katsuji Sugimoto (until 7 April); Taichi Uzaki (starting 26 April)
- Fukushima Prefecture: Sakuma Ootake
- Gifu Prefecture: Kamon Muto
- Gunma Prefecture: Shigeo Kitano
- Hiroshima Prefecture: Hiroo Ōhara
- Hokkaido: Toshifumi Tanaka
- Hyogo Prefecture: Masaru Sakamoto
- Ibaraki Prefecture: Yoji Tomosue
- Ishikawa Prefecture: Wakio Shibano (until 19 January); Jūjitsu Taya (starting 24 February)
- Iwate Prefecture: Kenkichi Kokubun (until 29 April); Senichi Abe (starting 30 April)
- Kagawa Prefecture: Masanori Kaneko
- Kagoshima Prefecture: Katsushi Terazono
- Kanagawa Prefecture: Iwataro Uchiyama
- Kochi Prefecture: Wakaji Kawamura (until 11 December); Masumi Mizobuchi (starting 12 December)
- Kumamoto Prefecture: Saburō Sakurai
- Kyoto Prefecture: Torazō Ninagawa
- Mie Prefecture: Masaru Aoki (until 18 March); Satoru Tanaka (starting 23 April)
- Miyagi Prefecture: Otogorō Miyagi
- Miyazaki Prefecture: Nagashige Tanaka (until 30 March); Jingo Futami (starting 23 April)
- Nagano Prefecture: Torao Hayashi
- Nagasaki Prefecture: Takejirō Nishioka
- Nara Prefecture: Ryozo Okuda
- Niigata Prefecture: Shohei Okada (until 29 April) Kazuo Kitamura (starting 30 April)
- Oita Prefecture: Tokuju Hosoda (until 27 April); Kaoru Kinoshita (starting 28 April)
- Okayama Prefecture: Yukiharu Miki
- Osaka Prefecture: Bunzō Akama
- Saga Prefecture: Naotsugu Nabeshima
- Saitama Prefecture: Yuuichi Oosawa
- Shiga Prefecture: Kotaro Mori
- Shiname Prefecture: Yasuo Tsunematsu
- Shizuoka Prefecture: Toshio Saitō
- Tochigi Prefecture: Juukichi Kodaira (until 5 January); Kiichi Ogawa (starting 7 February)
- Tokushima Prefecture: Kuniichi Abe (until 30 March); Kikutaro Hara (starting 25 April)
- Tokyo: Seiichirō Yasui
- Tottori Prefecture: Shigeru Endo
- Toyama Prefecture: Kunitake Takatsuji
- Wakayama Prefecture: Shinji Ono
- Yamagata Prefecture: Michio Murayama (until 20 January); Tōkichi Abiko (starting 20 February)
- Yamaguchi Prefecture: Taro Ozawa
- Yamanashi Prefecture: Hisashi Amano
Events
- January 28 – Benesse Corporation was founded, as predecessor name was Fukutake Shoten.{{citation needed|date=May 2020}}
- February 17 - According to Japan Fire and Disaster Management Agency official confirmed report, Seibo no Sono (Our Lady's Garden) fire in Totsuka-ku, Yokohama, total 99 person were death.{{page needed|date=March 2020}}
- February 27 - 1955 Japanese general election
- April Unknown date – Bunka Shutter was founded, as predecessor name was Nippon Bunka Steel Door.{{page needed|date=May 2020}}
- April 7 - Radio Tokyo TV (now Tokyo Broadcasting System Television (TBS)) begins broadcasting.
- April 16–17 - Abe coal mine debris collapse, due to heavy torrential rain hit in Sasebo, Nagasaki Prefecture, resulting tn 73 persons death, according to JFDMA official confirmed report.[:ja:阿部鉱山ボタ山崩落事故] (Japanese language edition) Retrieved on 27 March 2020.
- April 21 - Opening of Gokō Station
- May 11 - Shiun Maru disaster
- May 14 - According to Japan National Police Agency official confirmed report, a charter bus plunged into the Kitakami River in Iwate Prefecture, resulting in twelve deaths and twenty-eight injured.{{page needed|date=March 2020}}
- July 28- According to JFDMA official confirmed report, 36 junior school students died when a high wave hit, during school swimming lesson in Nakakawara beach, Tsu, Mie Prefecture.{{page needed|date=March 2020}}
- September 3 - Yumiko-chan incident
- November 1 - According to JFDMA official confirmed report, Moshiri Coal mine gas explosion hit in Akabira, Hokkaido, official death toll number is 60, with 17 person were wounded.{{page needed|date=March 2020}}
- November 15 - Japan Liberal Party and Democratic Party of Japan were unified, ruling Liberal Democratic Party of Japan has started.{{page needed|date=April 2020}}
- Establishment of Akkeshi Prefectural Natural Park
Births
- January 13 - Ran Itō, actress
- January 15 - Mayumi Tanaka, voice actress
- January 17 - Mami Koyama, voice actress
- January 20 - Hiromi Ōta, singer
- January 22 - Keiko Takahashi, actress
- January 28 - George Tokoro, television personality and singer-songwriter
- February 12 - Ai Satō, voice actress
- February 13 - Akiko Yano, singer-songwriter
- March 2 - Shoko Asahara, cult leader (Aum Shinrikyo) (d. 2018)
- March 16 - Jiro Watanabe, boxer
- March 20 - Mariya Takeuchi, singer-songwriter
- April 5 - Akira Toriyama, Manga artist (d. 2024){{cite news |last1=Yoon |first1=John |last2=Notoya |first2=Kiuko |title=Akira Toriyama, Creator of 'Dragon Ball,' Dies at 68 |work=The New York Times |date=8 March 2024 |url=https://www.nytimes.com/2024/03/08/arts/akira-toriyama-dead.html |access-date=21 March 2024}}
- April 7 - Akira Nishino, soccer player and manager
- April 13 - Hideki Saijo, singer and actor (d. 2018)
- April 15 - Ryūtarō Nakamura, Anime director (d. 2013)
- April 23 - Fumi Hirano, voice actress and essayist
- April 29 - Yūko Tanaka, actress
- May 9 – Masayuki Kakefu, former professional baseball player
- May 24 - Rumiko Ukai, voice actress
- May 25 - Suguru Egawa, baseball player
- May 26 - Masaharu Morimoto, chef
- May 30 - Nakamura Kanzaburō XVIII, Kabuki actor (d. 2012)
- June 1 - Chiyonofuji Mitsugu, sumo wrestler (58th Yokozuna grand champion)
- June 26 - Yoko Gushiken, boxer
- July 1 - Sanma Akashiya, comedian and actor
- August 20 - Agnes Chan, television personality
- August 30 - Mayumi Muroyama, Manga artist
- September 4 - Hiroshi Izawa, actor
- September 24 - Shinbo Nomura, Manga artist
- October 18 - Hiromi Go, singer
- October 19 - LaSalle Ishii, television personality
- October 21 - Yasukazu Hamada, politician
- October 29 - Etsuko Shihomi, actress
- November 3 - Yukihiko Tsutsumi, film director
- November 14 - Koichi Nakano, bicycle rider
- December 9 - Asashio Tarō IV, sumo wrestler
- December 16 - Chiharu Matsuyama, singer-songwriter
- December 24 - Mizuho Fukushima, politician
Deaths
- February 17 - Ango Sakaguchi, author (b. 1906)
- October 15 - Fumio Hayasaka, composer (b. 1914){{cite web |title=Fumio Hayasaka |url=https://www2.bfi.org.uk/films-tv-people/4ce2ba16301b0 |archive-url=https://web.archive.org/web/20160720195301/http://www.bfi.org.uk/films-tv-people/4ce2ba16301b0 |url-status=dead |archive-date=July 20, 2016 |website=BFI |access-date=23 November 2020 |language=en}}
- October 25 - Sadako Sasaki, hibakusha (b. 1943)