Gu An (; (ca. 1289–after 1365), style name as Dingzhi (), pseudonym as Yuna Jushi (), was a famed Chinese painter in the Yuan Dynasty.
Gu An as born in Huaidong (æ·®æÂ± - present day Kunshan in Jiangsu Province). He excelled in bamboo painting, particularly bamboo waving in the breeze.