Xun Xu (c. 221 – 289), courtesy name Gongzeng was a Chinese musician, painter, politician, and writer who lived during the late Three Kingdoms period and early Jin dynasty of China. Born in the influential , he was a great-grandson of Xun Shuang and a distant maternal relative of Zhong Yao's family. he served as an official in the state of Wei in the late Three Kingdoms era before serving under the Jin dynasty.