Liolaemus magellanicus, also known commonly as Magellan's tree iguana, is a species of lizard in the family Liolaemidae. The species is native to southern South America. It is notable for being the southernmost lizard species in the world.
The specific name, magellanicus, refers to the Straits of Magellan.
Liolaemus magellanicus is found in Patagonia and Isla Grande de Tierra del Fuego in Chile and Argentina.
The preferred natural habitat of Liolaemus magellanicus is areas of low vegetation such as grassland and shrubland, at elevations from sea level to .
Liolaemus magellanicus may attain a snout-to-vent length (SVL) of , with a tail length about equal to the SVL.
Liolaemus magellanicus preys predominately upon insects, but also eats plant material.
Liolaemus magellanicus is viviparous.