Duyu

thumb|upright|Modern image of Duyu in a temple in Chengdu

Duyu (, meaning cuckoo) was a legendary ruler of the ancient Kingdom of Shu in China. Accounts of his life are essentially mythological in nature, but some scholars believe that he existed as a person or as representation of a dynasty. He was the fourth ruler of Shu, and was said to have ruled Shu for over a hundred years.