| Named By: | Robert Broom in 1911 |
| Time Period: | Permian |
| Location: | South Africa |
| Size: | 18 centimetre skull, Body about 1.1 meters long |
| Diet: | Carnivore |
| Fossil(s): | Several specimens |
| Classification: | | Chordata | Therapsida | Gorgonopsidae | |
Arctognathus is an extinct genus of gorgonopsid that throve during the Late Permian in the Karoo basin of what is now South Africa.