Liolaemus kriegi, also known commonly as Krieg´s tree iguana, is a species of lizard in the family Liolaemidae. The species is endemic to Argentina.

Etymology: The specific name, kriegi, is in honor of German zoologist Hans Krieg (1888–1970).

Geographic range: L. kriegi is found in the Andean highlands of southwestern Argentina, in Neuquén Province and western Río Negro Province.

Habitat: The preferred natural habitat of L. kriegi is rocky areas of grassland or shrubland near water, at altitudes of .

Behavior: L. kriegi is terrestrial and saxicolous (rock-dwelling).

Reproduction: The mode of reproduction of L. kriegi has been described as viviparous and as ovoviviparous.