Chang Ruo (Chinese: 昌若; pinyin: Chāng Ruò) was the ancestor of the Shang dynasty. His family name is Zi (子). He was the fourth leader of the Predynastic Shang.

His great-grandfather was Xie. His grandfather was Zhao Ming. His father was Xiang Tu. His son was Cao Yu, the founding monarch of the Tang ancestors.

In order to domesticate horses, his father, Xiang Tu, was in the position of Xiang of Xia, and the horse was made.^{[clarification needed][citation needed]}

After the death of Xiang Tu, Chang Ruo succeeded him. When he died, his son, Cao Yu, succeeded him,^[1] but because the name of Chang Ruo appears later, it may be a fictitious one.

• Great-great-grandfather: Emperor Ku (帝嚳)
  • Great-grandfather: Xie (契)
    • Grandfather: Zhao Ming (昭明)
      • Father: Xiang Tu (相土)
        • Self: Chang Ruo (昌若)
          • Son: Cao Yu (曹圉)

"Records of the Grand Historian" (史記)/Volume 3