Torei Enji (????) (8 May 1721 - 10 April 1792) was an eminent Japanese Zen Buddhist monk, teacher, author, painter and calligrapher.
He was the chief disciple and Dharma heir of famed Japanese Rinzai master Hakuin Ekaku (1685-1786) and was a major figure in the revival of the Rinzai school in eighteenth century Japan.
He is also known as the author of an influential text on Zen practice called "The Undying Lamp of Zen" (Shumon mujinto ron), which is his magnum opus and presents the comprehensive system of Rinzai Zen as it existed at the time of Hakuin.