King You of Chu (楚幽王 Chǔ Yōu Wáng, died 228 BC) was from 237 to 228 BC the king of the state of Chu during the late Warring States period of ancient China. He was born Xiong Han (熊悍) and King You was his posthumous title.

He succeeded his father King Kaolie of Chu and during his reign You's maternal uncle Li Yuan (李园) served as prime minister.

In 235 BCE, after an attack on the State of Zhao, troops from the states of Qin and Wei united to attack Chu but suffered a defeat.

In March 228 BCE, King You of Chu died and was succeeded by his younger brother Xiong You, who would later be styled King Ai of Chu.

It is rumoured that King You of Chu was actually the illegitimate son of Lord Chunshen.

In the 1930s his tomb at Shou County, Anhui Province was destroyed by warlords, and many artifacts were dispersed, but a great bronze cauldron or ding called 楚大鼎 was preserved and is on display in Anhui Museum.

楚幽王（？ - 前228年），羋姓，熊氏，名悍，楚考烈王之子，其母為李園之妹，《戰國策》說經過李園設計，幽王實為春申君之私生子。

前238年，李園設謀陷害，殺春申君，自為楚國令尹。

楚幽王三年（前235年），秦國繼攻趙國之後，命大將辛梧率四郡兵馬，聯合魏國，對楚國發起攻擊，後無功而退。

幽王十年（前228年）三月，幽王卒，同母弟熊猶代立，是為楚哀王。1930年代安徽壽縣的楚幽王墓被軍閥盜墓。

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