Omnivoropteryx (meaning "omnivorous wing") is a genus of primitive flying avialan from the early Cretaceous Upper Jiufotang Formation of China.

Paul Sereno, for example, considered the family Omnivoropterygidae to be invalid because it is redundant and was not given a phylogenetic definition.

[3] The single species O. sinousaorum shows an interesting mix of specialized and generalized characters: the legs were short and well suited for perching on branches, while the wings were long, suggesting it did not need a running or jumping takeoff to get into the air.

Its skull, on the other hand, was similar to some early oviraptorosaurs, having the structure of a beak designed for crushing and tearing with some teeth at the tip of the upper jaw.

Thus, the species may have been an opportunistic omnivore (as the name suggests), utilizing a wide range of food sources, unlike other early birds which were active predators of smaller animals.