Khaan (/ˈkɑːn/; from Mongol [χaːŋ] 'lord') is an extinct genus of oviraptorid dinosaur known from remains found in the Djadochta Formation of Mongolia, dating to the Late Cretaceous (Campanian, 75-71 million years ago).

The study ruled out a possibly pathologic explanation, finding sexual dimorphism to have more support.

It was thought that the reduced spines were a female characteristic, because they would increase space for laying eggs.

The moderate jaw gape seen in oviraptorosaurs is indicative of herbivory in the majority of the group, but it is clear they were likely feeding on much tougher or more types of vegetation than other herbivorous theropods in their environment, such as ornithomimosaurs and therizinosaurs were able to.

The examinations suggest oviraptorosaurs may have been powerful-biting generalists or specialists that partook of niche partitioning both in body size and cranial function.