Wang Xu (王緒) (d. 886) was a warlord the late Chinese dynasty Tang Dynasty, who controlled Guang Prefecture (光州, in modern Xinyang, Henan) as its prefect from 881 to 885. Subsequently, faced with material demands from Qin Zongquan, who had claimed imperial title, which Wang was unable to meet, Wang Xu forced the people and the soldiers of Guang Prefecture to abandon it and follow him in heading south to modern Fujian. Wang Xu was then overthrown by his subordinate Wang Chao, who eventually took over Fujian and whose family established the Five Dynasties and Ten Kingdoms period state Min.