The Arakan forest turtle (Heosemys depressa) is a critically endangered, poorly known chelonian endemic to western Myanmar. Previously known only from the Rakhine ( = Arakan) Hills, we here report a significant northward range extension into the southern Chin Hills, verify the occurrence of H. depressa in Kyauk Pan Taung Wildlife Sanctuary, and present new information on elevational limits, natural history, and folk taxonomy of this enigmatic species.