The hairy-fronted muntjac or black muntjac is a type of deer currently found in Zhejiang, Anhui, Jiangxi and Fujian in south-eastern China. It is considered to be endangered, with an estimated population of just 5-10,000 over a large area. Reports of hairy-fronted muntjacs from Burma result from considering the hairy-fronted muntjac and Gongshan muntjac as the same species (they are easily confused). It is similar in size to the common muntjac.

Hairy-fronted muntjacs are extremely difficult to study because of their shyness. Camera-trap photographs have revealed the presence of hairy-fronted muntjacs where they were believed not to have existed for decades, for example in the Wuyanling National Nature Reserve.

This species was for a very long time one of the most poorly known deer in the world. It was also considered highly endangered; up to 1975, it was only known from a few museum specimens, at least to western scientists. The species has been heavily hunted throughout the 20th century and in 1978 alone at least 2,000 animals were killed. The current population in China was assessed in the early 1990s to be about 10,000 individuals, however it has declined much since and the current population is likely to be well under 7,000. Given all this, one would assume that it had a high conservation status, but it is currently just considered as vulnerable. This has the potential to move fast, should they suffer more hunting, or have other problems in their natural habitat.