Terauchi (寺内) is a Japanese surname.
People with the name include:
- Terauchi Masatake (1852 – 1919), 18th Prime Minister of Japan
- Terauchi Hisaichi (1879 - 1946), Field marshal, commander of the Japanese Imperial Army's Southern Expeditionary Army Group
- Takeshi Terauchi (born 1939), Japanese instrumental rock guitarist
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