Events in the year 1927 in Japan. It corresponds to Shōwa 2 (昭和2年) in the Japanese calendar.
Incumbents
Emperor: Hirohito
Prime Minister: Wakatsuki Reijirō (until April 20) Tanaka Giichi (From April 20)
Governors
Aichi Prefecture: Saburo Shibata (until 17 May); Toyoji Obata (starting 17 May) Akita Prefecture: Nakano Kunikazu (until 17 May); Yuichiro Chikaraishi (starting 17 May) Aomori Prefecture: until 27 May: Koyanagi Mamoru 27 May-7 November: Jiro Morioka starting 7 November: Tetsuzo Yoshimura Ehime Prefecture: Masayasu Kosaka (until 27 May); Yujiro Ozaki (starting 27 May) Fukui Prefecture: Keizo Ichimura Fukuoka Prefecture: Saito Morikuni (starting month unknown) Fukushima Prefecture: Hiroshi Kawabuchi (until 27 May); Ito Kihachiro (starting 27 May) Gifu Prefecture: Shintaro Suzuki (until 27 May); Rokuichiro Ono (starting 27 May) Gunma Prefecture: Kotsuke (until 27 May); Agata Shinobu (starting 27 May) Hiroshima Prefecture: Kaiichiro Suematsu (until 7 November); Sukenari Yokoyama (starting 7 November) Ibaraki Prefecture: until 17 May: Kihachiro Ito 17 May-7 November: Sanosuke starting 7 November: Jiro Morioka Ishikawa Prefecture: Korekiyo Otsuka then Sukenari Yokoyama Iwate Prefecture: Kakichi Tokuno Kagawa Prefecture: Misho Miura (until 27 May); Toshio Motoda (starting 27 May) Kanagawa Prefecture: Ikeda Hiroshi Kochi Prefecture: Sato Naorimittsu (until 17 May); Aidkame Kiyoo (starting 17 May) Kumamoto Prefecture: Masao Oka (until 17 May); Saito Munenori (starting 17 May) Kyoto Prefecture: until April: Tsunenosuke Hamada April-July: Shigoro Sugiyama starting July Shigeyoshi Omihara Mie Prefecture: Endo Ryusaku Miyagi Prefecture: Katorataro Ushizu Miyazaki Prefecture: Kiyoo Aida (until 17 May); Akira Kouda (starting 17 May) Nagano Prefecture: Umetani Mitsusada (until 28 April); Ryo Chiba (starting 28 April) Niigata Prefecture: Takeo Mimatsu (until 28 April); Shohei Fujinoma (starting 28 April) Okayama Prefecture: Masao Kishimoto (starting month unknown) Okinawa Prefecture: Tsuguo Imashuku (until 7 May); Tōjirō Iio (starting 7 May) Osaka Prefecture: Harumichi Tanabe (starting month unknown) Saitama Prefecture: until 17 May: Saito Morikuni 17 May-7 November: Yashu starting 7 November: Miyawaki Umekichi Shiga Prefecture: Shinya Kurosaki (until month unknown) Shiname Prefecture: until 18 May: Jiro Morioko 17 May-18 May: Yukichi Shirakami starting 18 May: Rinsaku Yagi Tochigi Prefecture: Hyoichi Fujioka (until 17 May); Takeichi Fujiyama (starting 17 May) Tokyo: Hiroshi Hiratsuka Toyama Prefecture: Yukichi Shirakami (until 17 May); Shirane Takesuke (starting 17 May) Yamagata Prefecture: Misawa Kan'ichi (until 17 May); Shinohara Eitaro (starting 17 May)