Siats /see-ats/ is an extinct genus of large neovenatorid dinosaur known from the Late Cretaceous Cedar Mountain Formation of Utah, United States. It contains a single species, Siats meekerorum. If confirmed, S. meekerorum could be the first neovenatorid discovered in North America and the geologically youngest allosauroid yet discovered from the continent. It was initially classified as a megaraptoran, a clade of large theropods with very controversial relationships. This group may be examples of early tyrannosauroids, neovenatorid allosauroids, or basal coelurosaurs.