Guanxiu (born 832, Jinhua, Zhejiang province, China—died 912) was a Tang dynasty Chan (in Japanese, Zen) painter known for his paintings of lohans (arhats). The best known of the lohan paintings that are attributed to him are a series of 16 in the Tokyo National Museum.
Guanxiu eventually settled in the Shu-Han capital of Chengdu. His family name of Jiang was changed to Guanxiu when he entered a Chan monastery as a youth. He was renowned not only as a painter but also as a poet and Buddhist savant.