Duke Zhuang of Zheng (757 BCE–701 BCE) is the third ruler of the State of Zheng during the Spring and Autumn Period in ancient China.

His ancestral name is Ji,given name is Wusheng, which means "a difficult birth".

In 743 BCE, he becomes the duke of Zheng, and later defeats his brother Gongshu Duan, who had led a rebellion against him.

Duke Zhuang leads military campaigns in the name of the Zhou king against the Rong people and other Zhou states.

He also has a rather Machiavellian attitude towards ruling his country.