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{{short description|Japanese politician}}
{{family name hatnote|Hamaguchi|lang=Japanese}}
{{Infobox officeholder
| honorific_prefix    = [[Senior Second Rank]]
| name                = Hamaguchi Osachi
| native_name         = {{nobold|濱口 雄幸}}
| native_name_lang    = ja
| image               = Osachi Hamaguchi posing.jpg
| office              = [[Prime Minister of Japan]]
| monarch             = [[Hirohito]]
| term_start          = 10 March 1931
| term_end            = 14 April 1931
| predecessor         = ''Himself''<br>[[Kijūrō Shidehara]] (acting)
| successor           = [[Wakatsuki Reijirō]]
| monarch1            = Hirohito
| term_start1         = 2 July 1929
| term_end1           = 14 November 1930
| predecessor1        = [[Tanaka Giichi]]
| successor1          = Kijūrō Shidehara (acting)<br>''Himself''
| office2             = [[Rikken Minseitō|President of the Rikken Minseitō]]
| term_start2         = 1 June 1927
| term_end2           = 13 April 1931
| predecessor2        = ''Position established''
| successor2          = Wakatsuki Reijirō
| office3             = [[Home Ministry|Minister of Home Affairs]]
| primeminister3      = Wakatsuki Reijirō
| term_start3         = 3 June 1926
| term_end3           = 20 April 1927
| predecessor3        = Wakatsuki Reijirō
| successor3          = [[Suzuki Kisaburō]]
| office4             = [[Minister of Finance (Japan)|Minister of Finance]]
| primeminister4      = [[Katō Takaaki]]<br>Wakatsuki Reijirō
| term_start4         = 11 June 1924
| term_end4           = 3 June 1926
| predecessor4        = [[Kazue Shōda]]
| successor4          = [[Hayami Seiji]]
| office5             = Member of the [[House of Representatives (Japan)|House of Representatives]]
| constituency5       = Kōchi Counties (1919–1920)<br>Kōchi 2nd (1920–1928)<br>Kōchi 1st (1928–1931)
| term_start5         = 26 March 1919
| term_end5           = 26 August 1931
| predecessor5        = [[Shiraishi Naoji]]
| successor5          = [[Minoru Tamura (politician)|Minoru Tamura]]
| constituency6       = Kōchi City
| term_start6         = 25 March 1915
| term_end6           = 25 January 1917
| predecessor6        = [[Mitsumori Tokuji]]
| successor6          = [[Nakano Torajirō]]
| birth_date          = {{birth date|1870|4|1|df=y}}
| birth_place         = [[Nagaoka District, Kōchi|Nagaoka, Kōchi]], [[Empire of Japan|Japan]]
| death_date          = {{death date and age|1931|8|26|1870|4|1|df=y}}
| death_place         = [[Koishikawa]], [[Tokyo City|Tokyo]], Japan
| death_cause         = Gunshot wound
| restingplace        = [[Aoyama Cemetery]]
| party               = [[Rikken Minseitō]] (1927–1931)
| otherparty          = [[Rikken Dōshikai]] (1913–1916)<br>[[Kenseikai]] (1916–1927)
| spouse              = {{marriage|Natsu Hamaguchi|1889}}
| relatives           = [[Yasumasa Narasaki]] (grandson-in-law)
| alma_mater          = [[University of Tokyo|Tokyo Imperial University]]
| signature           = HamaguchiO kao.png
}}
[[File:Adachi Kenzō, Hamaguchi, Shimada, Baron Kato, Kataoka Naoharu, and Ema Koigumi.jpg|[[Adachi Kenzō]], Osachi Hamaguchi, [[Toshio Shimada]], [[Baron Kato]], [[Kataoka Naoharu]], and [[Ema Koigumi]] in 1916 |thumb]]
'''Hamaguchi Osachi''' ([[Kyūjitai]]: {{lang|ja|濱口 雄幸}}; [[Shinjitai]]: {{lang|ja|浜口 雄幸}}, 1 April 1870 – 26 August 1931) was a Japanese politician who served as [[Prime Minister of Japan]] from 1929 to 1931. Nicknamed the {{Nihongo|"Lion Prime Minister"|ライオン宰相|Raion Saishō}} due to his dignified demeanor and mane-like hair,<ref>Hotta, page 99</ref> Hamaguchi served as leading member of the liberal ''[[Rikken Minseitō]]'' (Constitutional Democratic Party) during the "[[Taishō Democracy]]" of interwar Japan. He was a member of the [[House of Representatives (Japan)|House of Representatives]] from 1915 until his death. He initially survived an assassination attempt by a right-wing extremist in 1930, but died about nine months later from a bacterial infection in his unhealed wounds.

==Early life and career==
Hamaguchi was born in [[Nagaoka District, Kōchi|Nagaoka District]], [[Tosa Province]] (now part of [[Kōchi, Kōchi|Kōchi]] city, [[Kōchi Prefecture]] on the island of [[Shikoku]]). He was the third son of Minaguchi Tanehira, an official in the local forestry department, and took the Hamaguchi name on his marriage to Hamaguchi Natsuko in 1889. 

Hamaguchi graduated from the Law College of [[Tokyo Imperial University]] in 1895 and began his career as a bureaucrat in the [[Ministry of Finance (Japan)|Ministry of Finance]].<ref>Jansen. ''The Making of Modern Japan''. Page 510</ref> 

In 1907, he rose to the position of Director of the Monopoly Bureau. He became Vice Communications Minister in 1912 and Vice Finance Minister in 1914.

==Political career==
Hamaguchi joined the ''[[Rikken Dōshikai]]'' political party led by [[Katō Takaaki]] in 1915, which became the ''[[Kenseikai]]'' in 1916. Hamaguchi was elected to the [[House of Representatives (Japan)|lower house]] in the [[Japanese Diet]] in 1915 from the Kōchi Second District, and was to hold onto this seat until his death in 1931.

In June 1924, Hamaguchi served as Finance Minister under the [[Katō Takaaki Cabinet]], holding the same portfolio under the [[First Wakatsuki Cabinet]] from January to June 1926. As Finance Minister, he pursued fiscal retrenchment, and proposed reducing government spending by 17 percent and laying off tens of thousands of government workers; however, his policies had to be scaled considerably back due to strenuous opposition from government bureaucrats.<ref name=Metzler>''Lever of Empire'', p. 155.</ref>

Hamaguchi was subsequently [[Home Ministry (Japan)|Home Minister]] in the Wakatsuki cabinet from June 1926 to April 1927. In a continuation of his efforts while as Finance Minister, Hamaguchi promoted a moral campaign through sponsorship of movies which emphasized thrift and reduced [[Consumption (economics)|public consumption]], with the goal of helping reduce Japan's [[trade deficit]].<ref>Metzler, page 155</ref>

In 1927, Hamaguchi became the chairman of the new ''[[Rikken Minseitō]]'' political party formed by the merger of the ''Kenseikai'' and the ''[[Seiyūhontō]].''

==Premiership (1929–1931)==
{{Infobox premiership
| image        = Prime Minister Hamaguchi Osachi photograph.jpg
| caption      = Hamaguchi, before 1931
| name         = Premiership of Hamaguchi Osachi
| party        = [[Constitutional Democratic Party (Japan)|Rikken Minseitō]]
| monarch      = [[Hirohito|Emperor Shōwa]]
| seat         = [[Naikaku Sōri Daijin Kantei]]
| constituency = Kōchi 1st
| term_start  = 2 July 1929
| term_end    = 14 April 1931
| cabinet     = [[Hamaguchi Cabinet]]
| election    = [[1930 Japanese general election|1930]]
| predecessor = [[Tanaka Giichi#Premiership (1927–1929)|Tanaka Giichi]]
| successor   = [[Wakatsuki Reijirō#Second premiership (1931)|Wakatsuki Reijirō]]
| seal         = Emblem of the Government of Japan.svg
| seal_caption = Emblem of the Government of Japan
}}
{{seealso|Hamaguchi Cabinet}}
[[File:Hamaguchi Osachi Assassination 14 Nov 1930.png|thumb|Assassination attempt on Hamaguchi Osachi inside Tokyo Station, 14 November 1930]]
After the collapse of the administration of [[Tanaka Giichi]] in June 1929, Hamaguchi was selected to become [[Prime Minister of Japan]] and formed a cabinet based largely on Minseitō party members, which supported domestic economic reforms over overseas military adventurism.<ref name=Bix>''Hirohito'', p. 208-209.</ref> With a strong sense of his own rectitude and a tough, stubborn temperament, Hamaguchi inspired trust, promising that he was "ready to die if necessary" for the good of the country during his inaugural speech and promising an administration free of corruption.

Hamaguchi's primary concern was the Japanese economy, which had been in an ever-increasing [[recession]] since the end of [[World War I]], and had been greatly weakened by the devastation caused by the [[1923 Great Kantō earthquake]]. Hamaguchi promoted retrenchment, deflation and the rationalization of industry. The 1929 [[Great Depression]], starting soon after he took office, put further pressure on the economy.

Initial public confidence and strong support from Emperor [[Hirohito]] and his entourage, including the ''[[genrō]]'' [[Saionji Kinmochi]] allowed Hamaguchi to implement fiscal austerity measures, which included ratification of the [[London Naval Treaty]] of 1930, which curtailed military spending. However, his measures to help stimulate exports, such as returning the Japanese [[yen]] to the [[gold standard]], proved disastrous.

The failure of Hamaguchi's economic policies played into the hands of right-wing elements, already enraged by the government's conciliatory foreign policies and Japan's increasing unemployment problems. The opposition ''[[Rikken Seiyūkai]]'' joined forces with the vocal anti-Treaty faction within the [[Imperial Japanese Navy]] to accuse Hamaguchi of infringing of the military's "right of supreme command" as guaranteed under the [[Constitution of the Empire of Japan|Meiji Constitution]].<ref>Bix. Page 210</ref>

[[File:The scene of the death of Osachi Hamaguchi.jpg|thumb|The spot at Tokyo Station where Osachi Hamaguchi was shot]]
[[File:HamaguchiOsachi20130312.jpg|thumb|Plaque at Tokyo Station commemorating the shooting of Osachi Hamaguchi]]
Hamaguchi's initial popularity quickly waned, and he fell victim to an assassination attempt on 14 November 1930 when he was shot inside [[Tokyo Station]] by Tomeo Sagôya, a member of the ''Aikokusha'' ultranationalist secret society. (Nine years earlier another Prime Minister, [[Hara Takashi]], had been assassinated near the same place.) The head of the ''Aikoku-sha'' was ''Seiyūkai'' politician [[Ogawa Heikichi]].<ref>Bix. Page 211-212</ref> The wounds kept Hamaguchi hospitalized for several months.
[[File:Hamaguchi Osachi 1.jpg|thumb|Hamaguchi in diplomatic dress]]
Hamaguchi was reelected to a second term as Prime Minister of Japan in March 1931. However, with his health continuing to deteriorate, he was unable to attend the 59th Session of the Imperial Diet, which opened with Foreign Minister [[Kijūrō Shidehara]] as acting Prime Minister. The ''Seiyūkai'' immediately attacked the government on the grounds that the Prime Minister was not physically present, and that Shidehara was not even a member of the ''Minseitō''. When Shidehara further created an uproar with a comment concerning Emperor Hirohito's support of the London Naval Treaty, the ''Seiyūkai'' refused to participate in budget deliberations until Hamaguchi could attend. Despite his failing health, Hamaguchi was forced to attend the Diet, but resigned a month later to be replaced by [[Wakatsuki Reijirō]].<ref>{{cite web |url= http://www.ndl.go.jp/modern/e/cha3/description18.html |title= 3-18 Shooting of Prime Minister HAMAGUCHI Osachi |author=<!--Staff writer(s); no by-line.--> |year=2006 |work=Modern Japan in Archives |publisher=National Diet Library of Japan |access-date=12 January 2013}}</ref> He died on 26 August of the same year, and his grave is at the [[Aoyama Cemetery]] in Tokyo.

Sagôya was not immediately tried for murder. Nevertheless, in 1932, he was sentenced to death for attempted murder, after the judge ruled that the bullet had caused Osachi's death. Yoshikatsu Matsuki was sentenced to 13 years in prison as an accomplice, while Ainosuke Iwata received a 4-month sentence. However, in 1934, Sagôya's death sentence was reduced to life in prison in a general amnesty. He was one of many people involved in politically motivated murders, including that of prime ministers, to have their sentences reduced. Sagôya was released from prison in 1940, and died in 1972. He continued to be involved in far-right activities until his death.<ref>{{Cite news |date=1934-02-11 |title=Amnesty of 1934 |pages=18 |work=The Cincinnati Enquirer |url=https://www.newspapers.com/article/the-cincinnati-enquirer-amnesty-of-1934/128589297/ |access-date=2023-07-21}}</ref>

In 1931 Hamaguchi's cabinet sponsored a bill on [[women's suffrage]]. It would have granted women over the age of 25 the right to vote in local elections and stand for office given their husbands' approval. The bill passed the lower house, but it was defeated in the [[House of Peers (Japan)|House of Peers]] in March 1931 by a vote of 184 to 62.<ref>Nolte, Sharon H. [https://www.jstor.org/pss/178889  "Women's Rights and Society's Needs: Japan's 1931 Suffrage Bill,"] ''Comparative Studies in Society and History,'' October 1986, Vol. 28, No. 4, p. 690-714.</ref>

==Honours==
{{Unreferenced section|date=January 2013}}
*Grand Cordon of the [[Order of the Sacred Treasure]] (July 1926)
*Grand Cordon of the [[Order of the Rising Sun]] (April 1927)
*Grand Cordon of the [[Order of the Paulownia Flowers|Order of the Rising Sun with Paulownia Flowers]] (April 1931)

==Notes==
{{reflist}}

==References==
* [[Herbert Bix|Bix, Herbert P.]] (2000). ''[[Hirohito and the Making of Modern Japan]].'' New York: [[HarperCollins]]. {{ISBN|978-0-06-019314-0}}; {{OCLC|247018161}}
* [[Ian Buruma|Buruma, Ian]]. ''Inventing Japan: 1853–1964''. Modern Library. Reprint edition (2004) {{ISBN|0-8129-7286-4}}
* [[Eri Hotta|Hotta, Eri]]. ''Japan 1941: Countdown to Infamy''. Vintage. Reprint edition (2014) {{ISBN|978-0307739742}}
* [[Marius Jansen|Jansen, Marius B.]] (2000). ''The Making of Modern Japan.'' Cambridge: Harvard University Press. {{ISBN|9780674003347}}; [https://www.worldcat.org/oclc/44090600  OCLC 44090600]
* Metzler, Mark. '' Lever of Empire: The International Gold Standard and the Crisis of Liberalism in Prewar Japan''. University of California Press (2006) {{ISBN|0520244206}}

==External links==
{{Commons category|Osachi Hamaguchi}}
* {{PM20|FID=pe/007011}}

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{{succession box | before=[[Kijūrō Shidehara]] <small>(acting)</small>| title=[[Prime Minister of Japan]] | years= 10 March 1931 – 14 April 1931| after=[[Wakatsuki Reijirō]]}}
{{succession box | before=[[Tanaka Giichi]]| title=[[Prime Minister of Japan]] | years= 2 July 1929 – 14 November 1930| after=[[Kijūrō Shidehara]] <small>(acting)</small>}}
{{succession box | before=[[Wakatsuki Reijirō]]| title=[[Home Ministry (Japan)|Home Minister]] | years=3 June 1926 – 20 April 1927| after=[[Suzuki Kisaburō]]}}
{{succession box | before=[[Kazue Shōda]]| title=[[Ministry of Finance (Japan)|Finance Minister]] | years=30 January 1926 – 20 April 1927| after=[[Seiji Hamaya]]}}
{{S-end}}

{{Prime Ministers of Japan}}
{{Japanese finance ministers}}
{{Authority control}}

{{DEFAULTSORT:Hamaguchi, Osachi}}
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