Chialingosaurus (meaning "Chialing Lizard") is a genus of herbivorous stegosaurian dinosaur similar to Kentrosaurus from the Upper Shaximiao Formation, Late Jurassic beds in Sichuan Province in China.

The fossils of Chialingosaurus were collected by the geologist Kuan Yaowu or Guan Yao-Wu in 1957, at Taipingstai in Quxian County, while surveying the Chialing River in southern China.

[2] In 1999, Li Kui, Zhang Yuguang and Cai Kaiji mentioned a second species: Chialingosaurus guangyuanensis.

However, the gracile proportions may have been caused by the subadult age and the remainder of the diagnostic traits were in fact shared by other stegosaurs.

In 1990, Peter Malcolm Galton identified just a single autapomorphy: the lesser trochanter of the thighbone is triangular with a broad base.

[5] This was based upon previous work by Maidment & Wei in 2006 in which the authors were unable to identify any autapomorphies or unique character combinations for Chialingosaurus, therefore making it a nomen dubium.