The Bornean ferret badger is endemic to the island of Borneo, where it is suspected to occur in Kalimantan, Brunei, Sabah and Sarawak (Wozencraft 2005) However, the only confirmed records seem to be from Mount Kinabalu and surrounds in Sabah (Payne et al. 1985) with only one subsequent sighting reported from there by Dinets (2003) at 1,950 m. Museum individuals have been determined to have been from two other points outside the massif, in Penem Pang and Tuaran. However, the age of these specimens, how they were acquired, and therefore the reliability of the two locations, is unknown. This species is considered high montane, found from 900 to 3,700 m (Payne et al. 1985), and these outlying locations are near low-lying coastal areas.