The leaf muntjac is uniquely found in dense forests of Myanmar, in the Hukawng Valley region to the Northeast of Putao, hence its scientific epithet, and to the south of the Nam Tamai branch of the Mai Hka River. It is found at an altitude of 450 to 600 m — the transition zone between tropical forests and temperate ones. Its existence in India was first reported from Lohit district in eastern Arunachal Pradesh[5] In 2002, it was reported also to exist in Namdapha Tiger Reserve, also in eastern Arunachal Pradesh, India.[6] It has also been noted from the Lohit and Changlang region and near Noklak in Nagaland.[7] It probably inhabits suitable habitat over the entire junction of the Pātkai Bum and the Kumon Taungdan ranges.