Endothiodon (/ɛndoʊθiːoʊdɔːn/ "inner tooth" from Greek:endothi (ἔνδοϑι), "within", and Greek:odon (odōn), "tooth", most likely named for the characteristic of the teeth being placed internally to the maxilla) is an extinct genus of large dicynodont from the Late Permian. Like other dicynodonts, Endothiodon was an herbivore, but it lacked the two tusks that characterized most other dicynodonts.