| Named By: | HansinDieter Sues et al in 2011 |
| Time Period: | Late Triassic, Rhaetian |
| Location: | USA, New Mexico, Chinle Formation, Ghost Ranch quarry |
| Size: | Estimated at 1.5 meters long |
| Diet: | unavailable |
| Fossil(s): | A skull, ribs and vertebrae |
| Classification: | | Chordata | Reptilia | Dinosauria | Saurischia | Eusaurischia | Theropoda | |
Daemonosaurus (pron.:"DAY-mow-no-SORE-us") is an extinct genus of theropod dinosaur from the Late Triassic of New Mexico. Fossils have been found from deposits in the Chinle Formation, which is latest Triassic in age. While theropods had diversified into several specialized groups by this time, Daemonosaurus is a basal theropod that lies outside the clade Neotheropoda. Daemonosaurus is unusual among early theropods in that it had a short skull and long protruding teeth.