Terauchi Masatake (寺内 正毅 February 5,1852 - November 3,1919) was a Japanese politician and the 18th Prime Minister from October 9,1916 to September 29,1918.

He was born in Yamaguchi prefecture.

Preceded by:
Yamamoto Gonnohyoe
Prime ministers of Japan Succeeded by:
Hara Takashi