Duke Yi of Wey (Chinese: 衛懿公; pinyin: Wèi Yì Gōng, died 660 BC), given name Chi (赤), was a Zhou dynasty feudal lord and the 18th ruler of Wey.

He was best known for his absurd lifestyle which led to a temporary fall of his state and to his death.

[1] He led the army himself and fought the Di people in the battle of Yingze.

[2] In the winter of 660 BCE, Di people destroyed the defense of Wey army and ruined the city of Chaoge; today's Qi county of Henan Province.

His death marked the end of Wey's existence in Chaoge, the city which Shu Feng of Kang received from his brother Duke Zhou.