Yixianosaurus (meaning "Yixian lizard") is a maniraptoran theropod dinosaur genus from the Early Cretaceous of China.

[1] Yixianosaurus is known only from a single specimen, holotype IVPP V12638, which likely derived from the Dawangzhangzi Bed (early Aptian stage, 122 million years ago).

[3] Xu et al. (2013) suggested that the presence of large pennaceous feathers on parts of the forelimb strongly supports that Yixianosaurus was adapted for limited aerial locomotion.

[4] The describers considered the exact placement of Yixianosaurus within Maniraptora to be uncertain, but because the hand length resembled that of another feathered dinosaur, Epidendrosaurus (now Scansoriopteryx), they suggested it was a close relative of the Scansoriopterygidae.

[4] In a 2017 re-evaluation of the Harlem Archaeopteryx specimen as an anchiornithid called Ostromia, Yixianosaurus is found to be the most basal paravian.