Dayi Daoxin (Chinese: 道信， Wade–Giles: Tao-hsin) (Japanese: Dōshin) (580–651) was the fourth Chán Buddhist Patriarch, following Jianzhi Sengcan 僧璨 (died 606) (Wade–Giles: Chien-chih Seng-ts'an; Japanese: Kanchi Sosan) and preceding Hongren Chinese: 弘忍) (601–674).