Xū Gǔ (Hsü Ku, simplified Chinese: 虚谷; traditional Chinese: 虛谷; pinyin: Xū Gǔ); (c. 1824–1896) was a Chinese painter and poet during the Qing Dynasty (1644–1912).

This article relies largely or entirely on a single source. (May 2020)

Xu was born in She County in the Anhui province, and later lived in Guangling in the Jiangsu province.^[1] His style name was 'Xugu' and his sobriquet was 'Ziyang Shanren'. Xu was an army official, and then later a monk. When painting he used the side of the brush in a fluent and bold style. In poetry he produced the work Poetry of Xugu monk.