Liolaemus forsteri, also known commonly as Forster's tree iguana, is a species of lizard in the family Liolaemidae.

[2] The specific name, forsteri, is in honor of German entomologist Walter Forster.

[1][2] The preferred natural habitat of L. forsteri is rocky areas of grassland, at altitudes of 4,100–4,700 m (13,500–15,400 ft).

It has also been found in agricultural areas such as in rock piles on potato farms and in pastures of alpacas and llamas.

[1] A large species for its genus, L. forsteri may attain a snout-to-vent length (SVL) of 10.3 cm (4.1 in).