King Xiao of Zhou (), personal name Ji Bifang, was a king of the Chinese Zhou dynasty.Needham, Joseph (1986). Science and Civilization in China: Volume 2. Taipei: Caves Books Ltd. Estimated dates of his reign are 891–886 BC or 872–866 BC. He was a son of King Mu and brother of King Gong.Nienhauser, "Origins of Chinese Literature," page 201

King Xiao was preceded by his nephew King Yì of Zhou and followed by his nephew's son, King Yí of Zhou. Sima Qian wrote that the King Yí was "restored by the many lords". This hints at a usurpation, but the matter is not clear.China: From Neolithic cultures through the Great Qing Empire 10,000 BCE-1799 CE by Harold M. Tanner

Reign The Bamboo Annals state that upon ascending the throne, King Xiao immediately ordered the Marquis of Shen () to attack the Xirong. This seems to have resulted in successful hegemony, as five years later, they presented horses as tribute. Two years later, King Xiao would see the River Yangtze and Han River flood. Another two years later, cultivation of cattle through shepherds began.

Feizi was granted a small fief at Qin by King Xiao.Li, Feng (2006). Landscape And Power In Early China. Cambridge University Press. Page 263. . King Xiao learned of his reputation and put him in charge of breeding and training horses for the Zhou army. To reward his contributions, King Xiao wanted to make Feizi his father's legal heir instead of his half-brother Cheng.Han, Zhaoqi (2010). Annals of Qin (in Chinese). Annotated Shiji. Zhonghua Book Company. Pages 345–346. .

Family Queens: Wang Jing ()

See also Family tree of Chinese monarchs (ancient)

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