Lanxi Daolong (traditional Chinese: 蘭溪道隆; simplified Chinese: 兰溪道隆; pinyin: Lánxī Dàolóng; Wade–Giles: Lan-hsi Tao-long; Japanese: 蘭渓道隆, romanized: Rankei Dōryū; c. 1213-1278), born in Sichuan Province, China in 1213 A.D. (Southern Song Dynasty), was a famous Chinese Buddhist monk, calligrapher, idealist philosopher, and is the founder of the Kenchō-ji sect, which is a branch of the Rinzai school.