Temporal range: Pliocene – Pleistocene
Nothotherium mitchelli.jpg
A restoration of Nototherium
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Infraclass: Marsupialia
Order: Diprotodontia
Suborder: Vombatiformes
Family: Diprotodontidae
Genus: Nototherium
Owen, 1845

Nototherium (meaning "Southern Beast") is an extinct genus of marsupials from Australia. This mammal had hypsodont molars. It was a relative of the larger Diprotodon and a distant kin to modern wombats too. It was hunted by Megalania and Thylacoleo carnifex.