Gallotia goliath is an extinct giant lizard species from the island of Tenerife of the Canary Islands, Spain.

Before the arrival of the aborigines, the Canaries were inhabited by prehistoric animals; for example, the giant lizard (Gallotia goliath), or giant rats (Canariomys bravoi and Canariomys tamarani).

Fossilized remains of this animal have been found practically in every part of the island, but especially in deposits in caves or volcanic pipes of the island, where it often appears together with remains of other species such as the giant lizards (Gallotia goliath).

Subfossil remains from El Hierro that were assigned to the prehistorically extinct Gallotia goliath apparently belong to the present species (Barahona et al. 2000), but the population referred to G. goliath from Tenerife was distinct (Maca-Meyer et al. 2003).

It is thought that the arrival of the aborigines to the archipelago led to the extinction of some big reptiles and insular mammals, for example, the giant lizard Gallotia goliath (which managed to reach up to a meter in length) and Canariomys bravoi, the giant rat of Tenerife.

The museum also exhibits a fine collection of ceramics and fossils of prehistoric animals both of Canaries and of the rest of the world, such as the giant lizard of Tenerife (Gallotia goliath), the Tenerife Giant Rat (Canariomys bravoi) and a megalodon shark tooth.