King Wucheng of Yan

King Wucheng of Yan (; died 258 BC), personal name unknown, was a king of the Yan state. He ruled the kingdom between 271 BC until his death in 258 BC.

In 272 BC, King Wucheng's father, King Hui, was murdered by the powerful chancellor Gongsun Cao (公孫操). King Wucheng was crowned as the new Yan king. In the same year, Yan was attacked by a joint expedition of the forces of Han, Wei and Chu states. King Wucheng died in 258 BC, and was succeeded by his son, King Xiao.