Danum Valley Conservation Area is a 438 square kilometres tract of relatively undisturbed lowland dipterocarp forest in Sabah, Malaysia.

[citation needed] The nearest town, Lahad Datu is about 82 km away (about a 2 hours drive on mainly logging roads).

Danum Valley Field Centre is a research establishment for scientists and education purposes, and a nursery for propagating Dipterocarpus trees by the 100,000s.

Species endemic or native to the island include D. acutangulus, D. applanatus, D. borneensis, D. caudatus, D. caudiferus, D. confertus, D. conformis, D. coriaceus, D. costulatus, D. crinitus, D. elongatus, D. eurynchus, D. fusiformis, D. geniculatus, D. glabrigemmatus, D. globosus, D. gracilis, D. grandiflorus, D. hasseltii, D. humeratus, D. kerrii, D. mundus, D. ochraceus, D. palembanicus, D. sarawakensis, D. tempehes, D. validus and D. verrucosus.

In 2019, the world's tallest tropical tree, a yellow meranti (Richetia faguetiana) called Menara , was discovered in the valley.