| Named By: | Harry Govier Seeley in 1895 |
| Time Period: | Early Triassic - Middle Triassic |
| Location: | Namibia - Omingonde Formation. South Africa - Burgersdorp Formation. Zambia - Ntawere Formation |
| Size: | About 50 centimetres long |
| Diet: | Carnivore |
| Fossil(s): | Multiple individuals |
| Classification: | | Chordata | Synapsida | Therapsida | Cynodontia | Trirachodontidae | Trirachodontinae | |
Trirachodon (Greek: "three ridge tooth") is an extinct genus of tritylodontoid cynodont. Fossils have been found from the Cynognathus Assemblage Zone of the Beaufort Group in South Africa, dating back to the Early and Middle Triassic.