| Named By: | Romer in 1970 |
| Time Period: | Carboniferous 331-323 Ma |
| Location: | Scotland. USA |
| Size: | From 1.3 up to 2.5 meters long |
| Diet: | unavailable |
| Fossil(s): | Many specimens including several almost complete skeletons |
| Classification: | | Chordata | Tetrapoda | Amphibia | Reptiliomorpha | Anthracosauria | Embolomeri | |
Proterogyrinus was an anthracosaur, a large group of reptilian reptiliomorphs. It is likely that the first reptiles, such as Petrolacosaurus, evolved from reptilomorphs. Like other reptiliomorphs, such as Seymouria, Proterogyrinus could venture further away from water than most amphibians.
Its name is Greek for "early wanderer" or "earlier tadpole".