Holcosus chaitzami, also known commonly as Chaitzam's ameiva, is a species of lizard in the family Teiidae.

The specific name, chaitzami, is "dedicated to Chaitzam, the mountain lord who dominates the lower Cahabón Valley".

[3][4] H. chaitzami is found in Guatemala and in the southernmost Mexican state of Chiapas.

[2] The preferred natural habitat of H. chaitzami is forest, at altitudes of 400–700 m (1,300–2,300 ft).

[1] A small species for its genus, H. chaitzami may attain a snout-to-vent length (SVL) of about 8 cm (3.1 in).