| Named By: | Watson in 1921 |
| Time Period: | Capitanian, 266-260 Ma |
| Location: | South Africa |
| Size: | Skull 80 centimetres long. Body length estimated about 5 meters long, possibly larger |
| Diet: | unavailable |
| Fossil(s): | Lots of skulls and some partial post cranial remains |
| Classification: | | Chordata | Synapsida | Therapsida | Dinocephalia | Anteosauroidia | Anteosauridae | |
Anteosaurus (meaning "Antaeus reptile") is an extinct genus of large carnivorous synapsid. It lived during the Capitanian epoch of the Middle Permian (266-260 million years ago) in what is now South Africa. They became extinct by the middle Late Permian.