Sinankylosaurus (meaning "Chinese fused lizard") is a genus of dinosaur, originally described as an ankylosaur, from the Late Cretaceous Hongtuya Formation of Shandong, China.

The genus contains a single species, Sinankylosaurus zhuchengensis, known from a nearly complete right ilium.

The describers claim that the discovery of Sinankylosaurus further demonstrates the similarity between dinosaurs of eastern Asia and western North America.

[4] Sinankylosaurus is known from the Hongtuya Formation, part of the Wangshi Group of southern China.

Other animals from this group include Sinoceratops, a ceratopsian,[5] Shantungosaurus, a very common hadrosaurid to which most of the material has been assigned,[6] Zhuchengtyrannus, an Asian tyrannosaurid related to Tarbosaurus,[7] Zhuchengceratops, an Asian leptoceratopsid,[8] and material tentatively assigned to Tyrannosaurus.