Kenji Doihara (8 August 1883 ??23 December 1948) was a general in the Imperial Japanese Army in World War II. He was instrumental in the Japanese invasion of Manchuria in 1932.

As a leading intelligence officer he played a key role in the Japanese machinations leading to the occupation of large parts of China, the destabilization of the country and the disintegration of the traditional structure of Chinese society. He also became the mastermind behind the Manchurian drug trade, and the real boss and sponsor of every kind of gang and underworld activity in China.

After the end of World War II, he was prosecuted for war crimes by the International Military Tribunal for the Far East. He was found guilty, sentenced to death and was hanged in December 1948.