The Gongshan Muntjac (Muntiacus gongshanensis) is an enigmatic deer species, and little is known about its taxonomy, distribution and status. We conducted a camera-trapping survey in the Tengchong Section of Gaoligongshan National Nature Reserve, Yunnan Province, and obtained images of the species in May 2018. This is a new mammal record for Tengchong County and represents the southernmost global distribution of this species. We illustrated wild-living M. gongshanensis from Tengchong for the first time and provided diagnostic features of the species.