Chungkingosaurus, meaning "Chongqing Lizard", is a genus of herbivorous dinosaur from the Late Jurassic Upper Shaximiao Formation in what is now China.

the Chungkingosaurus jiangbeiensis holotype was one of the smallest stegosaurs with a length of less than four metres, even though it was apparently an adult, judging by the ossification of the sacrum.

Chungkingosaurus was different in its smaller size, deeper snout and front lower jaws (resulting in a relatively high and narrow skull), and non-overlapping teeth with less pronounced denticles.

[1] Chungkingosaurus probably possessed two rows of plates and spikes on its back, which were arranged in pairs, but the total number is unknown.

A unique feature is the presence of an additional pair at the very tail end, consisting of long thin spikes oriented almost horizontally and obliquely to the sides and rear in top view.

The type species, Chungkingosaurus jiangbeiensis, was named and described by Dong Zhiming, Zhou Shiwu, and Zhang Yihong in 1983.

It consists of a partial skeleton, containing the snout, the front of the lower jaws, ten dorsal vertebrae, a pelvis with sacrum, a series of twenty-three tail vertebrae, the lower end of a humerus, three metacarpals, both thighbones and shinbones and five back plates.

3, was based on specimen CV 00208, a series of ten vertebrae of a tail end with an articulated thagomizer.

[4] In 2006, Susannah Maidment and Wei Guangbiao considered Chungkingosaurus a valid genus, even though much of the material could no longer be localised.

Chungkingosaurus is thought to have coexisted with large plant-eaters and stegosaurids such as Chialingosaurus, Tuojiangosaurus, Mamenchisaurus, and Omeisaurus.