| Named By: | Lucas in 1904 |
| Time Period: | Late Triassic, 220-216 Ma |
| Location: | USA, Arizona |
| Size: | Up to 3.5 meters long |
| Diet: | unavailable |
| Fossil(s): | Remains of many individuals |
| Classification: | | Chordata | Synapsida | Therapsida | Dicynodontia | Kannemeyeriidae | |
Placerias (meaning broad body) is an extinct genus of dicynodonts that lived during the late Carnian age of the Triassic Period (221-210 million years ago). Placerias belongs to a group of dicynodonts called Kannemeyeriiformes, which was the last known group of dicynodonts before most of dicynodonts became extinct at the end of the Triassic.