Yueosaurus is an extinct genus of basal neornithischian dinosaur known from Zhejiang Province, China.

It was collected in Tiantai locality from the Liangtoutang Formation, dating to the Albian-Cenomanian stages of the latest Early Cretaceous and the earliest Late Cretaceous.

Yueosaurus represents the southernmost basal ornithopod dinosaur from Asia, and the first one from China.

[1] Han et al. found it plausible that Yueosaurus might be a member of Jeholosauridae or closely related to it.

[2] Yueosaurus was first named by Wenjie Zheng, Xingsheng Jin, Masateru Shibata, Yoichi Azuma and Fangming Yu in 2012 and the type species is Yueosaurus tiantaiensis.