| Named By: | Juan Carlos Cisneros, Fernando Abdala, Bruce S. Rubidge, Paula Camboim DentzieninDias & Ana de Oliveira Bueno in 2011 |
| Time Period: | Capitanian, 260 Ma |
| Location: | Brazil |
| Size: | Skull 22.5 centimetres long |
| Diet: | Herbivore |
| Fossil(s): | Almost complete skull |
| Classification: | | Chordata | Therapsida | Anomocephaloidea | |
Tiarajudens ("Tiaraju tooth") is an extinct genus of saber-toothed herbivorous anomodont which lived during the middle Permian period (Capitanian stage) in what is now Rio Grande do Sul, Brazil. It is known from the holotype UFRGS PV393P, a nearly complete skull. The type species T. eccentricus was named in 2011.