Terauchi Masatake

_Gensui_ **Count Terauchi Masatake** (), GCB (5 February 1852 – 3 November 1919), was a Japanese military officer and politician.  He was a _Gensui_ (or Marshal) in the Imperial Japanese Army and the prime minister of Japan from 1916 to 1918.

## Infobox (officeholder)

- **honorific prefix**: Senior Second Rank
Gensui (Imperial Japanese Army), Marshal Kazoku, Count
- **name**: Terauchi Masatake
- **native name lang**: ja
- **image**: Masatake Terauchi 2.jpg
- **office**: Prime Minister of Japan
- **monarch**: Emperor Taishō, Taishō
- **term start**: 9 October 1916
- **term end**: 29 September 1918
- **predecessor**: Ōkuma Shigenobu
- **successor**: Hara Takashi
- **office1**: Governor-General of Chōsen, Governor-General of Korea
- **monarch1**: Emperor Meiji, Meiji
Taishō
- **term start1**: 1 October 1910
- **term end1**: 9 October 1916
- **predecessor1**: Himself (as Japanese Resident-General of Korea, Resident-General)
- **successor1**: Hasegawa Yoshimichi
- **office3**: Minister for Foreign Affairs (Japan), Minister for Foreign Affairs of Japan
- **primeminister3**: _Himself_
- **term start3**: 9 October
- **term end3**: 21 November 1916
- **predecessor3**: Ishii Kikujirō
- **successor3**: Motono Ichirō
- **primeminister4**: Katsura Tarō
- **term start4**: 14 July
- **term end4**: 27 August 1908
- **predecessor4**: Hayashi Tadasu
- **successor4**: Komura Jutarō
- **office5**: Minister of Finance (Japan), Minister of Finance of Japan
- **primeminister5**: _Himself_
- **term start5**: 9 October
- **term end5**: 16 December 1916
- **predecessor5**: Taketomi Tokitoshi
- **successor5**: Kazue Shōda
- **successor6**: Ishimoto Shinroku
- **office6**: Army Ministry, Minister of the Army of Japan
- **term start6**: 27 March 1902
- **term end6**: 30 August 1911
- **predecessor6**: Kodama Gentarō
- **birth place**: Yamaguchi (city), Yamaguchi, Chōshū Domain, Tokugawa Shogunate, Japan
- **death place**: Tokyo, Empire of Japan, Japan
- **signature**: TerauchiM kao.png
- **party**: Independent (politician), Independent
- **spouse**:

- **children**: Hisaichi Terauchi
- **relatives**: Hideo Kodama (son-in-law)
- **allegiance**: Empire of Japan
- **branch**: Imperial Japanese Army
- **serviceyears**: 1871–1910
- **rank**: Field Marshal (_Gensui (Imperial Japanese Army), Gensui_)
- **battles**: Boshin War
Satsuma Rebellion
First Sino-Japanese War
Russo-Japanese War
- **awards**: Order of the Rising Sun <small>(1st class)</small>
Order of the Golden Kite <small>(1st Class)</small>
Order of the Bath <small>(Honorary Knight Grand Cross)</small>
- **status3**: Acting
- **monarch3**: Taishō
- **monarch4**: Meiji
- **monarch5**: Taishō
- **monarch6**: Meiji
- **primeminister1**: Katsura Tarō
 Saionji Kinmochi
 Katsura Tarō
 Yamamoto Gonnohyōe
 Ōkuma Shigenobu
- **office2**: Japanese Resident-General of Korea#List of Japanese residents-general, Resident-General of Korea
- **monarch2**: Meiji
- **primeminister2**: Katsura Tarō
- **successor2**: Himelf (as Resident-General)
- **termstart2**: 30 May
- **termend2**: 1 October 1910
- **predecessor2**: Sone Arasuke
- **office7**: Inspectorate General of Military Training#List of Inspectors-General of Military Training, Inspector-General of Military Training
- **termstart7**: 22 January 1898
- **termend7**: 25 April 1900
- **termstart8**: 14 January 1904
- **termend8**: 9 May 1905
- **monarch7**: Meiji
- **monarch8**: Meiji
- **predecessor7**: _Position established_
- **successor7**: Nozu Michitsura
- **successor8**: Nishi Kanjirō
- **predecessor8**: Nozu Michitsura
- **office9**: :ja:第1師団 (日本軍)#歴代参謀長, Chief of the General Staff of the 1st Division
- **monarch9**: Meiji
- **1blankname9**: Army Ministry#Ministers of the Army of Japan, Minister of the Army
- **1namedata9**: Takashima Tomonosuke
 Ōyama Iwao
- **termstart9**: 13 June 1891
- **termend9**: 9 September 1892
- **2blankname9**: Imperial Japanese Army General Staff Office#Chiefs of the General Staff, Chief of the General Staff
- **2namedata9**: Prince Arisugawa Taruhito
- **predecessor9**: Ōshima Yoshimasa
- **successor9**: Ōdera Yasuzumi