Diplotomodon (meaning "double cutting tooth") Leidy, 1868 was a dinosaur from the Late Cretaceous of New Jersey. It is only known from a single tooth, and may in fact be Dryptosaurus. Joseph Leidy originally described the tooth using the name 'Tomodon', but the name was pre-occupied and he changed it in 1868. Only the type species, Diplotomodon [=Tomodon] horrificus (Leidy, 1865) has been described.