| Named By: | John Strong Newberry in 1889 |
| Time Period: | 382.7-323.2 Ma Late Devonian to Early Carboniferous |
| Location: | China, Europe, North America and Russia |
| Size: | Approximately 70 centimetres long |
| Diet: | unavailable |
| Fossil(s): | Many specimens making Stethacanthus one of the best represented of early shark |
| Classification: | | Chordata | Chondrichthyes | Elasmobranchii | Symmoriida | Stethacanthidae | |
Stethacanthus is an extinct genus of Shark-like Holocephalian which lived from the Late Devonian to Early Carboniferous epoch, dying out around 323.2 million years ago. Fossils have been found in Europe and North America.