King Mu of Chu (Chinese: 楚穆王; pinyin: Chǔ Mù Wáng), personal name Xiong Shangchen, was from 625 BC to 614 BC the king of the Chu state.
In 626 BC, King Cheng tried to make his other son, Xiong Zhi (熊職), the new crown prince on the advice of his wife, Zheng Mao.
When King Mu learned of his father's plan, he surrounded the palace with his soldiers and forced King Cheng to hang himself.
King Mu then ascended the throne.
He was succeeded by his son, King Zhuang.