| Named By: | Florentino Ameghino in 1887 |
| Time Period: | Late Miocene-Pliocene (Mayoan-Montehermosan)~11.608-4.0 Ma |
| Location: | South America - Solimoes Formation |
| Size: | Exact details unavilable |
| Diet: | Herbivore |
| Fossil(s): | Partial remains |
| Classification: | | Chordata | Mammalia | Notoungulata | Toxodontidae | Haplodontheriinae | |
Trigodon is an extinct genus of the family Toxodontidae, a large bodied notoungulate which inhabited South America during the Late Miocene to Early Pliocene (Mayoan to Montehermosan in the SALMA classification), living from 11.61--4.0 Ma and existed for approximately 7.61 million years. The type species is T. gaudryi.
It bore a superficial resemblance to a rhinoceros, in that it had a horn on its forehead.