| Named By: | Z. Cheng & S. Ji in 1996 |
| Time Period: | Middle Permian, 270 Ma |
| Location: | China - Xidagou Formation |
| Size: | Skull about 35 centimetres long, total body length about 2 meters long |
| Diet: | Carnivore |
| Fossil(s): | Partial skull |
| Classification: | | Chordata | Synapsida | Therapsida | Dinocephalia | Anteosauridae | Anteosaurinae | |
| Also known as: | | Stenocybus acidentatus | |
Sinophoneus is an extinct genus of dinocephalian therapsid in the family Anteosauridae. A single fossilized skull (GMV 1601) has been found from the Middle Permian Xidagou Formation of China.