This primate is threatened by the destruction of its habitat for timber and cultivation (1). In Indonesia there have been cases of local people deliberately setting fire to forest to clear it for agriculture, which has had devastating consequences for this arboreal monkey (3). Hunting is also a major threat in Indonesia, and the increased availability of firearms has made the problem worse (3).
The species is currently found in 3 protected areas – Gunung Halimun NP, Pangandaran NR and Ujung Kulon NP (2). In addition to protecting the remaining forest habitat, it is essential that more is done to stop hunting and the bush meat trade in this part of the world (7). Without human intervention and protection, the endangered Javan langur will face extinction in the future (3).