| Named By: | Samuel Wendell Williston in 1910 |
| Time Period: | Early Permian |
| Location: | USA, Texas. France, Aveyron |
| Size: | 1.2 meters long |
| Diet: | unavailable |
| Fossil(s): | Several individual specimens |
| Classification: | | Chordata | Synapsida | Pelycosauria | Caseidae | |
Casea is an extinct genus of pelycosaur synapsid which was about 1.2 metres (4 ft) long from Texas, United States and Aveyron, France. It was slightly smaller than the otherwise very similar Caseoides. Casea was one of the first amniote herbivores, sharing its world with animals such as Dimetrodon and Eryops. It was possibly also aquatic.