The Nose-horned Chameleon, Calumma nasutum, is listed as Least Concern on the IUCN Red List of Threatened Species TM . This species is one of the smallest of the arboreal chameleons and is endemic to Madagascar, where it occurs throughout a wide area in the humid eastern part of the island.
Threats to the Nose-horned Chameleon include the loss and degradation of humid forest due to the effects of slash-and-burn farming and its resulting fire damage, which may lead to localised reductions in population densities. Unlike many other chameleons, it is thought that the Nose-Horned Chameleon is currently not threatened by collection for the international pet trade; however, other reports indicate that the trade in this species may be steadily increasing.
The Nose-horned Chameleon is very widespread and present in most protected areas in the east of Madagascar. It is listed on Appendix II of the Convention on International Trade in Endangered Species (CITES), under the genus Calumma, so that any international trade in this species that does occur should be carefully monitored.