Ingen Ryūki (traditional Chinese: 隱元隆琦; pinyin: Yǐnyuán Lóngqí; Japanese: 隠元隆琦, Japanese pronunciation: [iꜜŋ.ɡeɴ, -ŋeɴ]) (December 7, 1592 – May 19, 1673) was a Chinese poet, calligrapher, and monk of Linji Chan Buddhism from China. He is most known for founding the Ōbaku school of Zen in Japan.
Ingen is said to have introduced, from China into Japan, the common bean, which is named after him (Ingen mame (隠元豆; [iŋ.ɡeꜜm ma.me, iŋ.ŋeꜜm-], lit. 'Ingen bean'); Ingen itself is also short for Ingen mame). Robes worn by Ōbaku monks are called Ingengoromo (隠元衣; lit. 'Ingen robe').