Liolaemus dorbignyi, commonly known as D´Orbigny´s tree iguana, is a species of lizard in the family Liolaemidae. The species is endemic to South America.

Etymology: The specific name, dorbignyi, is in honor of French naturalist Alcide d´Orbigny.

Geographic range: L. dorbignyi is native to Argentina and Bolivia.

Habitat: The preferred natural habitat of L. dorbignyi is grassland, at altitudes of .

 Large and heavy-bodies for its genus, L. dorbignyi may attain a snout-to-vent length (SVL) of almost 10 cm (almost 4 in).

Diet: L. dorbignyi is herbivorous.

Reproduction: L. dorbignyi is viviparous.