1873 in Japan

• Monarch: Emperor Meiji{{cite web |title=Meiji {{!}} emperor of Japan |url=https://www.britannica.com/biography/Meiji |website=Encyclopedia Britannica |access-date=27 March 2019 |language=en}}

• Aichi Prefecture: Iseki Ushitora
• Akita Prefecture: Sugio Magoshichiro (until May 5), Senkichi Kokushi (starting May 5)
• Aomori Prefecture: J. Hishida
• Ehime Prefecture: Egi Yasunao
• Fukui Prefecture: Kotobuki Murata
• Fukushima Prefecture: Taihe Yasujo
• Gifu Prefecture: Joren Hasegawa
• Gunma Prefecture: Sada Aoyama (until November 2), vacant (starting November 2)
• Hiroshima Prefecture: Date Muneoki
• Ibaraki Prefecture: Toru Watanabe (starting September 9)
• Iwate Prefecture: Korekiyo Shima
• Kagawa Prefecture: Mohei Hayashi (until February 20)
• Kochi Prefecture: Iwasaki Nagatake
• Kyoto Prefecture: Hase Nobuatsu
• Mie Prefecture: Ryo Shioya
• Miyagi Prefecture: Tokisuke Miyagi
• Miyazaki Prefecture: Weiken Fukuyama
• Nagano Prefecture: Tachiki Kenzen then Narasaki Hiroshi
• Niigata Prefecture: Kusumoto Masataka
• Oita Prefecture: Kei Morishita
• Osaka Prefecture: Norobu Watanabe
• Saga Prefecture: Taku Shigeru then Ishii Kuni then Michitoshi Iwamura
• Saitama Prefecture: Morihide Nomura then Tasuke Shirane
• Shiname Prefecture: Kamiyama Ren
• Tochigi Prefecture: Iseki Ushitora
• Tokushima Prefecture: Nobuhiro Sato
• Tokyo: Miki Nabeshima
• Toyama Prefecture: Tadahiro Okubo
• Yamagata Prefecture: ......
• Yamaguchi Prefecture: Mishima Michitsune

• January 1 - Japan begins using the Gregorian calendar.
• January 4 - With the adoption of the Western calendar, the {{nihongo|five seasonal festivals||gosekku}} — Jinjitsu on January 7, Jōshi on March 3, Tango on May 5, Tanabata on July 7 and Chōyō on September 9) — are abolished.

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Category:1870s in Japan

Japan

Category:Years of the 19th century in Japan