楚王负刍（？ - ？），芈姓，熊氏，名负刍，楚考烈王之子，楚哀王之庶兄，一说楚顷襄王之子，楚考烈王之弟。

楚哀王继位二月馀，负刍门客杀哀王、太后李嫣和李园，立负刍为王。

秦王政二十三年（前224年）王翦领兵伐楚，秦兵坚壁不出，待楚军调动之际，大破楚军，追至蕲南（今湖北蕲春西北）；秦王政二十四年（前223年），秦再度出兵攻楚，虏负刍，平定楚国。负刍被废为庶人。

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Fuchu, King of Chu (楚王负刍), clan name Xiong, (熊) was from 227 to 223 BC the last king of the state of Chu during the late Warring States period of ancient China (though sources argue that Lord Changping was the last king of Chu). Fuchu was his given name and he did not receive a posthumous title.

Fuchu usurped the throne in 227 BC after he murdered his younger half-brother King Ai of Chu. In 223 BC he was captured and deposed by the army of Qin.