Hudiesaurus (meaning "butterfly lizard") is a herbivorous sauropod genus of dinosaur from China. The fossil remains of Hudiesaurus were in 1993 found by a Chinese-Japanese expedition near Qiketia in Shanshan, Xinjiang province. The type (and only named) species, Hudiesaurus sinojapanorum, was named and described by Dong Zhiming in 1997. The generic name is derived from Mandarin hudie, "butterfly" and refers to a flat butterfly-shaped process on the front base of the vertebral spine. The specific name refers to the members of the expedition but can also be read as "central part" in Chinese, a pun on the Japanese Chunichi Shinbun (again "central part") press group, which financed the research.