| Named By: | Louis Agassiz in 1846 |
| Time Period: | Late Cretaceous |
| Location: | Worldwide with fossil remains discovered in Africa, Asia, Europe, North and South America |
| Size: | Liodon mosasauroides about 12 meter long, Liodon sectorius smaller at about 8 meters long |
| Diet: | Carnivore/Piscivore |
| Fossil(s): | Numerous individuals, usually by skulls, jaws and teeth |
| Classification: | | Chordata | Reptilia | Squamata | Mosasauridae | Mosasaurinae | |
Liodon is a genus of mosasaur from the Late Cretaceous. Remains assigned to this genus have been found in Africa, Asia, Europe, North and South America, and New Zealand. It was first named by Richard Owen as Leiodon, but that name was already in use for a fish, necessitating the name change.