Heishansaurus, meaning "Heishan lizard" after the area in China where it was discovered, is the name given to a dubious genus of herbivorous ornithischian dinosaur, probably belonging to the Ankylosauridae.

In 1930, Swedish palaeontologist Anders Birger Bohlin discovered dinosaur fossils, in the context of the Swedish-Chinese expeditions headed by Sven Hedin, near Jiayuguan ("Chia-Yu-Kuan"), in the west of Gansu Province.

Of one dorsal vertebra a cast remains, preserved in the American Museum of Natural History with the inventory number AMNH 2062.

[2] Bohlin considered the species to be a member of the pachycephalosaurians because he mistook an osteoderm for the thick skull roof typical of this group.

It has been seen as a junior synonym of Pinacosaurus[3] but the genus is more generally considered a nomen dubium, especially since Bohlin's description can only be checked by comparison with his published drawings.